The document describes the design of a low power, fast full adder circuit using domino logic based on magnetic tunnel junctions (MTJs) and memristors. It aims to overcome speed and power limitations of traditional CMOS adders. The proposed circuit combines domino logic gates with MTJ and memristor components to achieve high speed, low power consumption, and accurate arithmetic operations. Simulation results show the circuit has a maximum power of 0.317μW and delay of 0.35ns, representing improvements over previous designs. Potential applications include high-speed arithmetic, low-power computing, cryptography, and neural networks.
Addition is a fundamental arithmetic operation that is broadly used in many VLSI systems, such as application-specific digital signal processing (DSP) architectures and microprocessors. This addition module is also the core of other arithmetic operations such as subtraction, multiplication, division and address generation. The prime objective of this project is to design a full-adder having low-power consumption and low propagation delay which may result in the efficient implementation of modern digital systems. This model is referred as “hybrid” because of the combination of two different design logic styles namely CMOS logic and pass transistor logic. Performance parameters such as power, delay and hence energy were compared with the existing designs such as complementary CMOS logic full adder. In the existing hybrid systems, over 28 transistors were used. While the optimized hybrid full adder circuit reduces this count to 8 transistors, it still obtains better energy efficiency. Further the proper working of proposed full adder is verified by applying it in a Ripple carry Adder circuit.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Current Comparison Domino based CHSK Domino Logic Technique for Rapid Progres...IJECEIAES
The proposed domino logic is developed with the combination of Current Comparison Domino (CCD) logic and Conditional High Speed Keeper (CHSK) domino logic. In order to improve the performance metrics like power, delay and noise immunity, the redesign of CHSK is proposed with the CCD. The performance improvement is based on the parasitic capacitance, which reduces on the dynamic node for robust and rapid process of the circuit. The proposed domino logic is designed with keeper and without keeper to measure the performance metrics of the circuit. The outcomes of the proposed domino logic are better when compared to the existing domino logic circuits. The simulation of the proposed CHSK based on the CCD logic circuit is carried out in Cadence Virtuoso tool.
ANALYSIS OF CMOS AND MTCMOS CIRCUITS USING 250 NANO METER TECHNOLOGYcscpconf
The low-power consumption with less delay time has become an important issue in the recent
trends of VLSI. In these days, the low power systems with high speed are highly preferable
everywhere. Designers need to understand how low-power techniques affect performance
attributes, and have to choose a set of techniques that are consistent with these attributes .The
main objective of this paper is to describe, how to achieve low power consumption with
approximately same delay time in a single circuit. In this paper, we make circuits with CMOS
and MTCMOS techniques and check out its power and delay characteristics. The circuits
designed using MTCMOS technique gives least power consumption.
All the pre-layout simulations have been performed at 250nm technology on tanner EDA tool.
Analysis of CMOS and MTCMOS Circuits Using 250 Nano Meter Technology csandit
The low-power consumption with less delay time has become an important issue in the recent
trends of VLSI. In these days, the low power systems with high speed are highly preferable
everywhere. Designers need to understand how low-power techniques affect performance
attributes, and have to choose a set of techniques that are consistent with these attributes .The
main objective of this paper is to describe, how to achieve low power consumption with
approximately same delay time in a single circuit. In this paper, we make circuits with CMOS
and MTCMOS techniques and check out its power and delay characteristics. The circuits
designed using MTCMOS technique gives least power consumption.
All the pre-layout simulations have been performed at 250nm technology on tanner EDA tool.
Addition is a fundamental arithmetic operation that is broadly used in many VLSI systems, such as application-specific digital signal processing (DSP) architectures and microprocessors. This addition module is also the core of other arithmetic operations such as subtraction, multiplication, division and address generation. The prime objective of this project is to design a full-adder having low-power consumption and low propagation delay which may result in the efficient implementation of modern digital systems. This model is referred as “hybrid” because of the combination of two different design logic styles namely CMOS logic and pass transistor logic. Performance parameters such as power, delay and hence energy were compared with the existing designs such as complementary CMOS logic full adder. In the existing hybrid systems, over 28 transistors were used. While the optimized hybrid full adder circuit reduces this count to 8 transistors, it still obtains better energy efficiency. Further the proper working of proposed full adder is verified by applying it in a Ripple carry Adder circuit.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Current Comparison Domino based CHSK Domino Logic Technique for Rapid Progres...IJECEIAES
The proposed domino logic is developed with the combination of Current Comparison Domino (CCD) logic and Conditional High Speed Keeper (CHSK) domino logic. In order to improve the performance metrics like power, delay and noise immunity, the redesign of CHSK is proposed with the CCD. The performance improvement is based on the parasitic capacitance, which reduces on the dynamic node for robust and rapid process of the circuit. The proposed domino logic is designed with keeper and without keeper to measure the performance metrics of the circuit. The outcomes of the proposed domino logic are better when compared to the existing domino logic circuits. The simulation of the proposed CHSK based on the CCD logic circuit is carried out in Cadence Virtuoso tool.
ANALYSIS OF CMOS AND MTCMOS CIRCUITS USING 250 NANO METER TECHNOLOGYcscpconf
The low-power consumption with less delay time has become an important issue in the recent
trends of VLSI. In these days, the low power systems with high speed are highly preferable
everywhere. Designers need to understand how low-power techniques affect performance
attributes, and have to choose a set of techniques that are consistent with these attributes .The
main objective of this paper is to describe, how to achieve low power consumption with
approximately same delay time in a single circuit. In this paper, we make circuits with CMOS
and MTCMOS techniques and check out its power and delay characteristics. The circuits
designed using MTCMOS technique gives least power consumption.
All the pre-layout simulations have been performed at 250nm technology on tanner EDA tool.
Analysis of CMOS and MTCMOS Circuits Using 250 Nano Meter Technology csandit
The low-power consumption with less delay time has become an important issue in the recent
trends of VLSI. In these days, the low power systems with high speed are highly preferable
everywhere. Designers need to understand how low-power techniques affect performance
attributes, and have to choose a set of techniques that are consistent with these attributes .The
main objective of this paper is to describe, how to achieve low power consumption with
approximately same delay time in a single circuit. In this paper, we make circuits with CMOS
and MTCMOS techniques and check out its power and delay characteristics. The circuits
designed using MTCMOS technique gives least power consumption.
All the pre-layout simulations have been performed at 250nm technology on tanner EDA tool.
Ultra Low Power Design and High Speed Design of Domino Logic CircuitIJERA Editor
The tremendous success of the low-power designs of VLSI circuits over the past 50 years has significant change
in our life style. Integrated circuits are everywhere from computers to automobiles, from cell phones to home
appliances. Domino logic is a CMOS based evolution of the dynamic logic techniques based on either PMOS or
NMOS transistors. Dynamic logic circuits are used for their high performance, but their high noise and
extensive leakage has caused some problems for these circuits. Dynamic CMOS circuits are inherently less
resistant to noise than static CMOS circuits. In this paper we proposed different domino logic styles which
increases performance compared to existing domino logic styles. According to the simulations in cadence
virtuoso 65nm CMOS process, the proposed circuit shows the improvement of up thirty percent compared
existing domino logics.
A Survey Analysis on CMOS Integrated Circuits with Clock-Gated Logic StructureIJERA Editor
Various circuit design techniques has been presented to improve noise tolerance of the proposed CGS logic families. Noise in deep submicron technology limits the reliability and performance of ICs. The ANTE (Average Noise Threshold Energy) metric is used for the analysis of noise tolerance of proposed CGS. A 2-input NAND and NOR gate is designed by the proposed technique. Simulation results for a 2-input NAND gate at clock gated logic show that the proposed noise tolerant circuit achieves 1.79X ANTE improvement along with the reduction in leakage power. Continuous scaling of technology towards the manometer range significantly increases leakage current level and the effect of noise. This research can be further extended for performance optimization in terms of power, speed, area and noise immunity.
NEW DESIGN METHODOLOGIES FOR HIGH-SPEED MIXED-MODE CMOS FULL ADDER CIRCUITSVLSICS Design
This paper presents the design of high-speed full adder circuits using a new CMOS mixed mode logic family. The objective of this work is to present a new full adder design circuits combined with current mode circuit in one unit to implement a full adder cell. This paper also discusses a high- speed hybrid majority function based 1-bit full adder that uses MOS capacitors (MOSCAP) in its structure with conventional static and dynamic CMOS logic circuit. The static Majority function (bridge) design style enjoys a high degree of regularity and symmetric higher density than the conventional CMOS design style as well as lower power consumption by using bridge transistors. This technique helps in reducing power consumption, propagation delay, and area of digital circuits while maintaining low complexity of mixedmode logic designs. Dynamic CMOS circuits enjoy area, delay and testability advantages over static CMOS circuits. Simulation results illustrate the superiority of the new designed adder circuits against the reported conventional CMOS, dynamic and majority function adder circuits, in terms of power, delay, power delay product (PDP) and energy delay product (EDP). The design is implemented on UMC 0.18µm process models in Cadence Virtuoso Schematic Composer at 1.8 V single ended supply voltage and simulations are carried out on Spectre S.
Design High Performance Combinational Circuits Using Output Prediction Logic-...IOSRJECE
With the continuously increasing demand for low power & high speed VLSI circuits the brain storming among the scientists, inventors & researchers to find the techniques required to design such high performance circuits is also increasing day by day. In the answer to this search several design techniques have been found. Output prediction logic-OPL technique is one of such newly introduced techniques. OPL is a technique that can be applied to conventional CMOS logic families in order to obtain considerable speedups. Speedups of two to three times over static CMOS logic are demonstrated for a variety of combinational circuits. When applied to static CMOS the OPL retains the restoring nature of underlying logic family. In case of OPL applied to the pseudo NMOS & domino logic, the problem of excessive power dissipation is solved & speedups more than static CMOS logic is obtained
A comparative study of full adder using static cmos logic styleeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Implementation of pull up pull-down network for energy optimization in full a...IJARIIT
Nowadays the requirements of energy optimized low power circuits in higher-end applications such as
communication, IoT, biomedical systems etc., there are several techniques used to implement energy optimization in low power
circuits but the static power dissipation need to improve such kind of circuits. The conventional topology has been
implemented in basic logical gates but the delay and power much higher in each individual cell. Now we proposed an
unbalanced pull-up and pull-down network in full adder circuit using symbols. These techniques were employed to reduce the
static power dissipation and switching delay in each individual cell. The design was implemented in Cadence virtuoso TMSC
180nm CMOS technology and it’s obtaining the total power dissipation 5.128nW.The pull-up and pull-down network used to
reduce the static power dissipation in full adder is used to improve the operating speed of each individual.
Low Power-Area Design of Full Adder Using Self Resetting Logic with GDI Techn...VLSICS Design
Various electronic devices such as mobile phones, DSPs,ALU etc., are designed by using VLSI (Very
Large Scale Integration) technology. In VLSI dynamic CMOS logic circuits are concentrating on the Area
,reducing the power consumption and increasing the Speed by reducing the delay. ALU (Arithmetic Logic
Circuits) are designed by using adder, subtractors, multiplier, divider, etc.Various adder circuits designs
have been proposed over last few years with different logic styles. To reduce the power consumption
several parameters are to be taken into account, such as feedthrough, leakage power single-event upsets,
charge sharing by parasitic components while connecting source and drain of CMOS transistors There are
situations in a logic that permit the use of circuits that can automatically precharge themselves (i.e., reset
themselves) after some prescribed delays. These circuits are hence called postcharge or self-resetting logic
which are widely used in dynamic logic circuits. Overall performance of various adder designs is
evaluated by using Tanner tool . The earlier and the proposed SRLGDI primitives are simulated using
Tanner EDA with BSIM 0.250 lm technology with supply voltage ranging from 0 V to 5 V in steps of 0.2 V.
On comparing the various SRLGDI logic adders, the proposed adder shows low power, delay and low
PDP among its counterparts.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
PERFORMANCE OF DIFFERENT CMOS LOGIC STYLES FOR LOW POWER AND HIGH SPEED VLSICS Design
Designing high-speed low-power circuits with CMOS technology has been a major research problem for many years. Several logic families have been proposed and used to improve circuit performance beyond that of conventional static CMOS family. Fast circuit families are becoming attractive in deep submicron technologies since the performance benefits obtained from process scaling are decreasing as feature size decreases. This paper presents CMOS differential circuit families such as Dual rail domino logic and pseudo Nmos logic their delay and power variations in terms of adder design and logical design. Domino CMOS has become the prevailing logic family for high performance CMOS applications and it is extensively used in most state-of-the-art processors due to its high speed capabilities. The drawback of domino CMOS is that it provides only non-inverting functions because of its monotonic nature. Dual-Rail Domino logic, (also known as clocked Cascade voltage switch logic where both polarities of the output are generated, provides a robust solution to this problem.
A high speed dynamic ripple carry addereSAT Journals
Abstract Adder, which is one of the basic building blocks of a processor affect the performance of the processor. There are many adder architectures each of them have their own advantage. Ripple Carry Adder (RCA) architecture occupies the minimum area among the other architectures with lesser power dissipation. RCA experiences more delay due to its carry propagation in critical path; apart from the delay it also experiences glitches. Constant delay (CD) logic solves both the delay problems and glitch related problems. CD logic, due to its pre-evaluated characteristics delivers high speed but due its bulkier nature it is used only in the critical path. In this paper two new techniques are presented which modifies the conventional timing block (requires ten transistors) in CD logic and two new timing blocks one with eight transistors and other with nine transistors are developed. The CD logic with the two new timing block is used in critical path of RCA to achieve higher speed performance with lesser area compared to conventional CD logic. The CD logic with 9-transistor timing block achieves 70% and 39% delay reduction compared to Static and Domino logics. It also achieves 21% and 5% reduction in power dissipation and delay. The 8-transistor version also achieves reduction of delay by 65% and 29% compared to Static and dynamic logic. The two versions of timing blocks have their own advantages where 9-transistor version provides high speed and 8- transistor version provides lesser power dissipation. Simulations are carried out in 130 nm at 1V power supply using mentor graphics tools. Key Words: Critical Path, Feed Through Logic, Constant Delay logic, Pre-evaluated logic, and Timing block.
The paper presents a low Power consumption plays a vital role in the present day VLSI technology. Power consumption of an electronic device can be reduced by adopt changed design styles. Multipliers play a most important role in high concert systems. This project focus on a novel energy efficient technique called adiabatic logic which is based on energy renewal principle and power is compared by designing a multiplier. CMOS technology plays a main role in designing low power consuming devices, compared to different logic family CMOS has less power dissipation. Adiabatic logic method is assumed to be an attractive solution for low power electronic applications. By using Adiabatic techniques energy dissipation in PMOS network can be minimized and selection of energy stored at load capacitance can be recycled instead of dissipated as heat. Tanner EDA tools are used for simulation.
This paper presents a recursive designing approach for high energy efficient carry select adder (CSA). Nowadays, the portable equipment’s like mobile phones and laptops have higher demands in the market. So, the designers must focus greater attention while designing such devices. Which means that have the devices must have lesser power consumption, low cost and have a better performance. The customers mainly focus on the equipment’s which have lesser power consumption, low cost and better performance. As we all know that the adders are the basic building block of microprocessors. The performance of the adders greatly influences the performance of those processors. The carry select adder is most suitable among other adders which have fast addition operation at low cost. The carry select adder (CSA) consists of chain full adders (FAs) and multiplexers. Here a carry select adder is designed with four FAs and four multiplexers. The proposed structure is assessed by the power consumption of the carry select adder using a 32-nm static CMOS technology for a wide range of supply voltages. The simulation results are obtained using Tanner EDA which reveals that the carry select adder has low power consumption.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Ultra Low Power Design and High Speed Design of Domino Logic CircuitIJERA Editor
The tremendous success of the low-power designs of VLSI circuits over the past 50 years has significant change
in our life style. Integrated circuits are everywhere from computers to automobiles, from cell phones to home
appliances. Domino logic is a CMOS based evolution of the dynamic logic techniques based on either PMOS or
NMOS transistors. Dynamic logic circuits are used for their high performance, but their high noise and
extensive leakage has caused some problems for these circuits. Dynamic CMOS circuits are inherently less
resistant to noise than static CMOS circuits. In this paper we proposed different domino logic styles which
increases performance compared to existing domino logic styles. According to the simulations in cadence
virtuoso 65nm CMOS process, the proposed circuit shows the improvement of up thirty percent compared
existing domino logics.
A Survey Analysis on CMOS Integrated Circuits with Clock-Gated Logic StructureIJERA Editor
Various circuit design techniques has been presented to improve noise tolerance of the proposed CGS logic families. Noise in deep submicron technology limits the reliability and performance of ICs. The ANTE (Average Noise Threshold Energy) metric is used for the analysis of noise tolerance of proposed CGS. A 2-input NAND and NOR gate is designed by the proposed technique. Simulation results for a 2-input NAND gate at clock gated logic show that the proposed noise tolerant circuit achieves 1.79X ANTE improvement along with the reduction in leakage power. Continuous scaling of technology towards the manometer range significantly increases leakage current level and the effect of noise. This research can be further extended for performance optimization in terms of power, speed, area and noise immunity.
NEW DESIGN METHODOLOGIES FOR HIGH-SPEED MIXED-MODE CMOS FULL ADDER CIRCUITSVLSICS Design
This paper presents the design of high-speed full adder circuits using a new CMOS mixed mode logic family. The objective of this work is to present a new full adder design circuits combined with current mode circuit in one unit to implement a full adder cell. This paper also discusses a high- speed hybrid majority function based 1-bit full adder that uses MOS capacitors (MOSCAP) in its structure with conventional static and dynamic CMOS logic circuit. The static Majority function (bridge) design style enjoys a high degree of regularity and symmetric higher density than the conventional CMOS design style as well as lower power consumption by using bridge transistors. This technique helps in reducing power consumption, propagation delay, and area of digital circuits while maintaining low complexity of mixedmode logic designs. Dynamic CMOS circuits enjoy area, delay and testability advantages over static CMOS circuits. Simulation results illustrate the superiority of the new designed adder circuits against the reported conventional CMOS, dynamic and majority function adder circuits, in terms of power, delay, power delay product (PDP) and energy delay product (EDP). The design is implemented on UMC 0.18µm process models in Cadence Virtuoso Schematic Composer at 1.8 V single ended supply voltage and simulations are carried out on Spectre S.
Design High Performance Combinational Circuits Using Output Prediction Logic-...IOSRJECE
With the continuously increasing demand for low power & high speed VLSI circuits the brain storming among the scientists, inventors & researchers to find the techniques required to design such high performance circuits is also increasing day by day. In the answer to this search several design techniques have been found. Output prediction logic-OPL technique is one of such newly introduced techniques. OPL is a technique that can be applied to conventional CMOS logic families in order to obtain considerable speedups. Speedups of two to three times over static CMOS logic are demonstrated for a variety of combinational circuits. When applied to static CMOS the OPL retains the restoring nature of underlying logic family. In case of OPL applied to the pseudo NMOS & domino logic, the problem of excessive power dissipation is solved & speedups more than static CMOS logic is obtained
A comparative study of full adder using static cmos logic styleeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Implementation of pull up pull-down network for energy optimization in full a...IJARIIT
Nowadays the requirements of energy optimized low power circuits in higher-end applications such as
communication, IoT, biomedical systems etc., there are several techniques used to implement energy optimization in low power
circuits but the static power dissipation need to improve such kind of circuits. The conventional topology has been
implemented in basic logical gates but the delay and power much higher in each individual cell. Now we proposed an
unbalanced pull-up and pull-down network in full adder circuit using symbols. These techniques were employed to reduce the
static power dissipation and switching delay in each individual cell. The design was implemented in Cadence virtuoso TMSC
180nm CMOS technology and it’s obtaining the total power dissipation 5.128nW.The pull-up and pull-down network used to
reduce the static power dissipation in full adder is used to improve the operating speed of each individual.
Low Power-Area Design of Full Adder Using Self Resetting Logic with GDI Techn...VLSICS Design
Various electronic devices such as mobile phones, DSPs,ALU etc., are designed by using VLSI (Very
Large Scale Integration) technology. In VLSI dynamic CMOS logic circuits are concentrating on the Area
,reducing the power consumption and increasing the Speed by reducing the delay. ALU (Arithmetic Logic
Circuits) are designed by using adder, subtractors, multiplier, divider, etc.Various adder circuits designs
have been proposed over last few years with different logic styles. To reduce the power consumption
several parameters are to be taken into account, such as feedthrough, leakage power single-event upsets,
charge sharing by parasitic components while connecting source and drain of CMOS transistors There are
situations in a logic that permit the use of circuits that can automatically precharge themselves (i.e., reset
themselves) after some prescribed delays. These circuits are hence called postcharge or self-resetting logic
which are widely used in dynamic logic circuits. Overall performance of various adder designs is
evaluated by using Tanner tool . The earlier and the proposed SRLGDI primitives are simulated using
Tanner EDA with BSIM 0.250 lm technology with supply voltage ranging from 0 V to 5 V in steps of 0.2 V.
On comparing the various SRLGDI logic adders, the proposed adder shows low power, delay and low
PDP among its counterparts.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
PERFORMANCE OF DIFFERENT CMOS LOGIC STYLES FOR LOW POWER AND HIGH SPEED VLSICS Design
Designing high-speed low-power circuits with CMOS technology has been a major research problem for many years. Several logic families have been proposed and used to improve circuit performance beyond that of conventional static CMOS family. Fast circuit families are becoming attractive in deep submicron technologies since the performance benefits obtained from process scaling are decreasing as feature size decreases. This paper presents CMOS differential circuit families such as Dual rail domino logic and pseudo Nmos logic their delay and power variations in terms of adder design and logical design. Domino CMOS has become the prevailing logic family for high performance CMOS applications and it is extensively used in most state-of-the-art processors due to its high speed capabilities. The drawback of domino CMOS is that it provides only non-inverting functions because of its monotonic nature. Dual-Rail Domino logic, (also known as clocked Cascade voltage switch logic where both polarities of the output are generated, provides a robust solution to this problem.
A high speed dynamic ripple carry addereSAT Journals
Abstract Adder, which is one of the basic building blocks of a processor affect the performance of the processor. There are many adder architectures each of them have their own advantage. Ripple Carry Adder (RCA) architecture occupies the minimum area among the other architectures with lesser power dissipation. RCA experiences more delay due to its carry propagation in critical path; apart from the delay it also experiences glitches. Constant delay (CD) logic solves both the delay problems and glitch related problems. CD logic, due to its pre-evaluated characteristics delivers high speed but due its bulkier nature it is used only in the critical path. In this paper two new techniques are presented which modifies the conventional timing block (requires ten transistors) in CD logic and two new timing blocks one with eight transistors and other with nine transistors are developed. The CD logic with the two new timing block is used in critical path of RCA to achieve higher speed performance with lesser area compared to conventional CD logic. The CD logic with 9-transistor timing block achieves 70% and 39% delay reduction compared to Static and Domino logics. It also achieves 21% and 5% reduction in power dissipation and delay. The 8-transistor version also achieves reduction of delay by 65% and 29% compared to Static and dynamic logic. The two versions of timing blocks have their own advantages where 9-transistor version provides high speed and 8- transistor version provides lesser power dissipation. Simulations are carried out in 130 nm at 1V power supply using mentor graphics tools. Key Words: Critical Path, Feed Through Logic, Constant Delay logic, Pre-evaluated logic, and Timing block.
The paper presents a low Power consumption plays a vital role in the present day VLSI technology. Power consumption of an electronic device can be reduced by adopt changed design styles. Multipliers play a most important role in high concert systems. This project focus on a novel energy efficient technique called adiabatic logic which is based on energy renewal principle and power is compared by designing a multiplier. CMOS technology plays a main role in designing low power consuming devices, compared to different logic family CMOS has less power dissipation. Adiabatic logic method is assumed to be an attractive solution for low power electronic applications. By using Adiabatic techniques energy dissipation in PMOS network can be minimized and selection of energy stored at load capacitance can be recycled instead of dissipated as heat. Tanner EDA tools are used for simulation.
This paper presents a recursive designing approach for high energy efficient carry select adder (CSA). Nowadays, the portable equipment’s like mobile phones and laptops have higher demands in the market. So, the designers must focus greater attention while designing such devices. Which means that have the devices must have lesser power consumption, low cost and have a better performance. The customers mainly focus on the equipment’s which have lesser power consumption, low cost and better performance. As we all know that the adders are the basic building block of microprocessors. The performance of the adders greatly influences the performance of those processors. The carry select adder is most suitable among other adders which have fast addition operation at low cost. The carry select adder (CSA) consists of chain full adders (FAs) and multiplexers. Here a carry select adder is designed with four FAs and four multiplexers. The proposed structure is assessed by the power consumption of the carry select adder using a 32-nm static CMOS technology for a wide range of supply voltages. The simulation results are obtained using Tanner EDA which reveals that the carry select adder has low power consumption.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
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1. Design of Low Power Fast Full Adder using Domino
Logic Based on magnetic tunnel junction and
Memristor
Under the guidance of
Dr. Rakshith B
Assistant professor
Department of Electronics and Communication Engineering
JSS Science and Technology University, SJCE
By,
Radhika H R
Prakruthi K P
3. Abstract
Domino CMOS circuits are widely used in high-performance very large scale integrated (VLSI) systems.
The topology of domino circuits for high-speed operation, lower power consumption and robustness is of
great importance in designing digital systems. Here we are designing a low-power high-speed full adder
circuit, which uses a new CMOS domino logic family based on magnetic tunnel junction (MTJ) elements
and memristor in gate diffusion input (GDI) technique. In comparison with a static CMOS logic circuit, a
dynamic logic circuit is of importance since it provides higher speed and requires fewer transistors. In
comparison with the recently proposed circuits for dynamic logic styles, very low dynamic power
consumption and less delay are the features of the proposed circuit. The problem with dynamic circuits is
the lack of a stable output at different times, while the proposed circuit preserves the output value using
memory elements such as MTJ and memristor during the clock cycle. The proposed technique shows a
maximum power consumption of 0.317 μW in MTJ/memristor-based full adders. The proposed technique
shows a maximum delay of 0.35 ns.
4. Introduction
In last few years, the use of internet of things (IoT) devices, cell phones, tablets and sensors has been
dramatically increased. Most of these devices are battery-powered, so power consumption (battery life) can
be considered as a design challenge. Non-conventional CMOS and nano-technology pave the way for
designing low-power electronics, which reduce the leakage power consumption, so low-power applications
can rely on emerging technologies in this area.
For reducing dynamic power consumption, the energy stored in load capacitors can be recovered instead of
being dissipated as heat. This technique is referred to as adiabatic (reversible) circuit design . Magnetic
tunnel junction (MTJ) is a non volatile memory with short access time and small dimensions as well as
compatibility with CMOS technology .
5. Introduction
Thus, it is well suited for using in logic-in-memory (LiM) architectures. LiM structures use MTJs and are
very suitable for low-power designs because of almost zero static power dissipation. Here a memristor is
also used as a memory element to design 1-bit full adder based on domino logic, and the results are
eventually compared with MTJ family. Low-power designs are of great importance as the demand for
battery-operated portable devices is ever-increasing. In a large number of this type of devices, the battery
life is more important than the operating speed. Nano-devices and adiabatic designs are used in LiM
structures to reduce, respectively, the static and dynamic power consumption. As an emerging technology,
MTJ has many advantages when used in LiM structures along with CMOS technology. The power
consumption of the proposed adiabatic MTJ/CMOS full adder is more than 7 times less than those of the
previous MTJ/CMOS full adders. In the presented domino logic is based on MTJ elements in gate
diffusion input (GDI) technique.
6. Introduction
A dynamic logic circuit is more interesting than a static CMOS logic circuit since it has higher speed and
requires fewer transistors. In comparison with the recently proposed circuits for dynamic logic styles, very
low dynamic power consumption and less delay are the features of the proposed circuit. Additionally, the
proposed circuit shows extreme fault tolerance. Standard 0,18 μm CMOS technology is used to simulate
the proposed full adder. Both memory cell and sensing amplifier in this type of circuit, however, are less
reliable, and this greatly limits the practical application of this type of circuit in logic computation. To
resolve this issue, a new magnetic full adder (MFA) is presented based on pre-charge sensing amplifier
(PCSA) and thermally assisted switching (TAS)-MTJ cell. A memristor is the fourth basic two–terminal
passive circuit element apart from well-known resistor, capacitor and inductor.
7. Motivation
The motivation to design a fast full adder circuit using domino logic and magnetic tunnel junctions is to
overcome the limitations of traditional CMOS-based adder circuits and create high-speed, low-power, and
accurate arithmetic circuits that can meet the growing demands of modern computing and other applications.
8. Problem statement
Traditional CMOS-based adder circuits are limited in speed and power efficiency, which can be a
bottleneck in high-performance computing, machine learning, cryptography, and other applications. The
goal is to design a fast full adder circuit using domino logic and magnetic tunnel junctions that can
operate at higher speeds and consume less power than traditional CMOS-based adder circuits. However,
designing such a circuit poses several challenges, including: High-speed operation, Power consumption,
Noise and reliability, Area efficiency.
9. Objectives
To create an arithmetic circuit that meets the following requirements
• High speed: The circuit should be able to perform addition operations quickly, with a short delay
between the input and output.
• Low power consumption: The circuit should consume minimal power, making it suitable for use in
low-power applications, such as mobile devices or IoT devices.
• High accuracy: The circuit should produce accurate results, with minimal errors or noise in the output.
10. Circuit diagram
Traditional CMOS-based adder circuits are limited in speed and power efficiency, which can be a bottleneck
in high-performance computing, machine learning, cryptography, and other applications. The goal is to
design a fast full adder circuit using domino logic and magnetic tunnel junctions that can operate at higher
speeds and consume less power than traditional CMOS-based adder circuits. However, designing such a
circuit poses several challenges, including: High-speed operation, Power consumption, Noise and reliability,
Area efficiency.
12. Proposed logic
Fig. 3: Proposed domino logic circuit.
Fig. 4: Schematic of the proposed final full adder based on MJT and memristor
13. Methodology
• Define the specifications of the full adder circuit, including its input and output bit- widths, power supply
voltage, operating frequency, and any other relevant parameters.
• Choose a suitable domino logic circuit topology for the full adder. Domino logic is a fast and energy-efficient
logic style that uses precharged nodes to reduce the delay of logic gates. Some common domino logic circuits
used for full adders include complementary CMOS (C2MOS), pass-transistor logic (PTL), and transmission
gate logic (TGL).
• Choose a suitable magnetic tunnel junction (MTJ) device for implementing the logic gates in the full adder
circuit. MTJs are non-volatile memory devices that can also be used as logic gates due to their high-speed
switching and low-power consumption.
14. Methodology
• Design the individual MTJ-based logic gates that will be used in the full adder circuit. This will involve
selecting the appropriate MTJ device parameters, such as the tunnel magnetoresistance (TMR) ratio,
switching current density, and critical current density, to ensure fast and reliable operation.
• Combine the individual logic gates to form the full adder circuit. This may involve cascading multiple stages
of domino logic gates to achieve the desired speed and performance.
• Simulate the full adder circuit using a cadence virtuoso simulator to verify its functionality and performance.
This will involve analyzing the circuit's timing, power consumption, and noise immunity, among other
parameters.
• Optimize the full adder circuit design as necessary to improve its performance or reduce its power
consumption. This may involve adjusting the device parameters or the circuit topology, or adding additional
stages of logic gates.
15. Working
In figure 3, the circuit consists of two clock transistor elements. In this circuit, when the clock and A both are
low, Z will be high and the output node will not change. The same is true when the clock is grounded and
input A is high. When the clock and A both are high, both Z and the output will be high. When the clock is
high and input A is low, Z will not change. In this condition, if Z is high (grounded), the output will be low
(high).
In figure 4, a full adder based on the novel domino logic circuit as well as MTJ and memristor components
as shown . In the proposed circuit, MTJ components are used in the output inverter to improve the circuit
performance to stay at stable values. Additionally, to reduce the delay due to the use of memory elements in
these circuits, we use discharge transistors to remove the electric charge from the z-storage node. This
reduces the power consumption and delays the main nodes.
20. Advantages
• High speed: Domino logic is a fast and efficient logic style that can operate at high clock frequencies, while
magnetic tunnel junctions can switch at high speeds. This makes a fast full adder circuit using these
technologies ideal for high-speed arithmetic circuits.
• Low power consumption: Domino logic and magnetic tunnel junctions both have low power consumption
compared to other logic styles and memory devices, respectively. This makes a fast full adder circuit based on
these technologies well-suited for low-power computing applications, such as mobile devices or IoT devices.
• Small area: Magnetic tunnel junctions are small in size and can be integrated into existing CMOS technology,
making a fast full adder circuit using these technologies compact and space-efficient.
21. Advantages
• Non-volatile memory: Magnetic tunnel junctions are non-volatile memory devices that can retain their state
even when power is turned off. This makes a fast full adder circuit based on these technologies well-suited for
use in memory applications, such as cache memory or register files.
• High noise immunity: Magnetic tunnel junctions are immune to noise and interference, making them reliable
and robust in noisy environments.
22. Applications
• High-speed arithmetic circuits: The fast and energy-efficient nature of domino logic and magnetic tunnel
junctions makes them well-suited for use in high-speed arithmetic circuits, such as adders and multipliers. A
fast full adder circuit using these technologies can be used to improve the performance and efficiency of such
circuits.
• Low-power computing: Magnetic tunnel junctions are non-volatile memory devices that can also be used as
logic gates. This makes them well-suited for use in low-power computing applications, such as mobile devices
or Internet of Things (IoT) devices, where energy efficiency is a critical consideration.
23. Applications
• Cryptography: Fast full adder circuits can also be used in cryptography applications, such as symmetric-key
encryption and decryption. The speed and efficiency of a full adder circuit using domino logic and magnetic
tunnel junctions can help to improve the performance of such cryptographic algorithms.
• Neural networks: Artificial neural networks (ANNs) are a type of machine learning algorithm that are used for
tasks such as image recognition and natural language processing. ANNs require high-speed and energy-
efficient arithmetic circuits, and a fast full adder circuit using domino logic and magnetic tunnel junctions can
be used to improve the performance and efficiency of such circuits in ANNs.
24. Conclusion
The design of a low-power, fast full adder using domino logic based on magnetic tunnel junction (MTJ)
and memristor technology presents a promising approach for improving the performance and energy
efficiency of digital circuits.
By utilizing MTJs and memristors, the proposed design takes advantage of their unique properties to
achieve low power consumption and high-speed operation. The use of domino logic, known for its
dynamic and energy-efficient nature, further enhances the overall performance of the full adder.
The magnetic tunnel junctions offer non-volatile memory capabilities, which can be utilized for storage
and retention of data. This feature enables the full adder to retain its state and reduce power consumption
during idle periods. The memristor technology provides additional benefits such as high scalability, low
energy operation, and compatibility with existing CMOS technology.
The combination of these advanced technologies in the design of the full adder results in improved power
efficiency and faster operation compared to traditional designs. This makes it suitable for applications
where low power consumption and high-speed processing are essential, such as in portable devices,
Internet of Things (IoT) systems, and battery-powered devices.
25. References
[1]. Design of low power fast full adder using Domino Logic based on magnetic tunnel junction (MTJ) and
memristor Pooria Parvizi a iD , Reza Sabbaghi-Nadooshan , Mohammad Bagher Tavakoli , Parvizi et al. /
Revista Ingeniería UC, Vol. 27, No 3, December, 2020
[2]. S. j. Jassbi and m. mousavi, “A Novel Low Power Full Adder Using a Modified Domino Logic,”
International Journal of Computer Sciences and Engineering, vol. 4, no. 6, pp. 8–11, 2016.
[3]. S. Garg and T. K. Gupta, “Low power domino logic circuits in deep-submicron technology using CMOS,”
Engineering Science and Technology, an International Journal, vol. 21, no. 4, pp. 625–638, 2018.
[4]. M. J. Garima and H. Lohani, “Design, implementation and performance comparison of multiplier topologies
in power-delay space,” Engineering Science and Technology, an International Journal, vol. 19, no. 1, pp. 271–
278, 2016.
[5]. S. j. Jassbi and m. mousavi, “A Novel Low Power Full Adder Using a Modified Domino Logic,”
International Journal of Computer Sciences and Engineering, vol. 4, no. 6, pp. 8–11, 2016
[6]. F. Sharifi, Z. Saifullah, and A. H. Badawy, “Design of adiabatic MTJ-CMOS hybrid circuits,” in 2017 IEEE
60th International Midwest Symposium on Circuits and Systems (MWSCAS). IEEE, 2017, pp. 715–718.