This document compares the use of complementary pass-transistor logic (CPL) to conventional CMOS design. CPL uses fewer transistors than CMOS gates, has smaller capacitances, and is faster. A 2:1 multiplexer is designed using both CMOS and CPL in Microwind and DSCH2 layout tools. Simulation results show the CPL multiplexer has lower power consumption, smaller area, faster rise/fall delays compared to the CMOS multiplexer. Therefore, CPL offers advantages over conventional CMOS in terms of speed, area, and power-delay products.
This presentation discusses the basics of Pass Transistor Logic, its advantages, limitation and finally implementation of Boolean functions/Combinational Logic circuits using Pass Transistor Logic.
This presentation has given a brief introduction and working of CMOS Logic Structures which includes MOS logic, CMOS logic, CMOS logic structure, CMOS complementary logic, pass transistor logic, bi CMOS logic, pseudo –nMOS logic, CMOS domino logic, Cascode Voltage Switch Logic(CVSL), clocked CMOS logic(c²mos), dynamic CMOS logic
I have prepared it to create an understanding of delay modeling in VLSI.
Regards,
Vishal Sharma
Doctoral Research Scholar,
IIT Indore
vishalfzd@gmail.com
This presentation discusses the basics of Pass Transistor Logic, its advantages, limitation and finally implementation of Boolean functions/Combinational Logic circuits using Pass Transistor Logic.
This presentation has given a brief introduction and working of CMOS Logic Structures which includes MOS logic, CMOS logic, CMOS logic structure, CMOS complementary logic, pass transistor logic, bi CMOS logic, pseudo –nMOS logic, CMOS domino logic, Cascode Voltage Switch Logic(CVSL), clocked CMOS logic(c²mos), dynamic CMOS logic
I have prepared it to create an understanding of delay modeling in VLSI.
Regards,
Vishal Sharma
Doctoral Research Scholar,
IIT Indore
vishalfzd@gmail.com
The CMOS VLSI DESIGN PPT had the complete vision on VLSI Design styles in chip fabrication. It can give a good amount of knowledge to the students who needs VLSI Design
A simple N-channel MOSFET can be used as a diode, Switch and Active resistor. This presentation is a part of course of Analog CMOS Design, based on textbook of same title by Allen Holberg.
This document discusses the basics of pass transistor logic. It also discusses how to realize ta a boolean equation using PTL , advantages and limitations of pass transistor circuits
Semiconductor engineering is becoming more dynamic fiels since the technology scaling is taking place. Power reduction techniques are lucrative solutions to the performance, area and power trade off. Therefore Power reduction of VLSI designs are critical.
The CMOS VLSI DESIGN PPT had the complete vision on VLSI Design styles in chip fabrication. It can give a good amount of knowledge to the students who needs VLSI Design
A simple N-channel MOSFET can be used as a diode, Switch and Active resistor. This presentation is a part of course of Analog CMOS Design, based on textbook of same title by Allen Holberg.
This document discusses the basics of pass transistor logic. It also discusses how to realize ta a boolean equation using PTL , advantages and limitations of pass transistor circuits
Semiconductor engineering is becoming more dynamic fiels since the technology scaling is taking place. Power reduction techniques are lucrative solutions to the performance, area and power trade off. Therefore Power reduction of VLSI designs are critical.
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.
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
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Free Journals, Open access Journals,
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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.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Performance Analysis of Encoder in Different Logic Techniques for High-Speed ...Achintya Kumar
In designing a system, we can replace cell components by appropriate technique based cell so that the noise margin of overall circuit is improved. In future we can also implement some techniques for sequential circuits.
DESIGN AND PERFORMANCE ANALYSIS OF HYBRID ADDERS FOR HIGH SPEED ARITHMETIC CI...VLSICS Design
Adder cells using Gate Diffusion Technique (GDI) & PTL-GDI technique are described in this paper. GDI technique allows reducing power consumption, propagation delay and low PDP (power delay product) whereas Pass Transistor Logic (PTL) reduces the count of transistors used to make different logic gates, by eliminating redundant transistors. Performance comparison with various Hybrid Adder is been presented. In this paper, we propose two new designs based on GDI & PTL techniques, which is found to be much more power efficient in comparison with existing design technique. Only 10 transistors are used to implement the SUM & CARRY function for both the designs. The SUM and CARRY cell are implemented in a cascaded way i.e. firstly the XOR cell is implemented and then using XOR as input SUM as well as CARRY cell is implemented. For Proposed GDI adder the SUM as well as CARRY cell is designed using GDI technique. On the other hand in Proposed PTL-GDI adder the SUM cell is constructed using PTL technique and the CARRY cell is designed using GDI technique. The advantages of both the designs are discussed. The significance of these designs is substantiated by the simulation results obtained from Cadence Virtuoso 180nm environment.
A novel approach for leakage power reduction techniques in 65nm technologiesVLSICS Design
The rapid progress in semiconductor technology have led the feature sizes of transistor to be shrunk there
by evolution of Deep Sub-Micron (DSM) technology; there by the extremely complex functionality is
enabled to be integrated on a single chip. In the growing market of mobile hand-held devices used all over
the world today, the battery-powered electronic system forms the backbone. To maximize the battery life,
the tremendous computational capacity of portable devices such as notebook computers, personal
communication devices (mobile phones, pocket PCs, PDAs), hearing aids and implantable pacemakers has
to be realized with very low power requirements. Leakage power consumption is one of the major technical
problem in DSM in CMOS circuit design. A comprehensive study and analysis of various leakage power
minimization techniques have been presented in this paper a novel Leakage reduction technique is
developed in Cadence virtuoso in 65nm regim with the combination of stack with sleepy keeper approach
with Low Vth & High Vth which reduces the Average Power with respect Basic Nand Gate 29.43%, 39.88%,
Force Stack 56.98, 63.01%, sleep transistor with Low Vth & High Vth 13.90, 26.61% & 33.03%, 75.24%
with respect to sleepy Keeper 93.70, 56.01% of Average Power is saved.
A NOVEL APPROACH FOR LEAKAGE POWER REDUCTION TECHNIQUES IN 65NM TECHNOLOGIESVLSICS Design
The rapid progress in semiconductor technology have led the feature sizes of transistor to be shrunk there by evolution of Deep Sub-Micron (DSM) technology; there by the extremely complex functionality is enabled to be integrated on a single chip. In the growing market of mobile hand-held devices used all over the world today, the battery-powered electronic system forms the backbone. To maximize the battery life, the tremendous computational capacity of portable devices such as notebook computers, personal communication devices (mobile phones, pocket PCs, PDAs), hearing aids and implantable pacemakers has to be realized with very low power requirements. Leakage power consumption is one of the major technical problem in DSM in CMOS circuit design. A comprehensive study and analysis of various leakage power minimization techniques have been presented in this paper a novel Leakage reduction technique is developed in Cadence virtuoso in 65nm regim with the combination of stack with sleepy keeper approach with Low Vth & High Vth which reduces the Average Power with respect Basic Nand Gate 29.43%, 39.88%, Force Stack 56.98, 63.01%, sleep transistor with Low Vth & High Vth 13.90, 26.61% & 33.03%, 75.24% with respect to sleepy Keeper 93.70, 56.01% of Average Power is saved.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
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.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
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.
2. IntroductIon.
AdvAntAges of usIng pAss trAnsIstor logIcs As
compAred to conventIonAl cmos logIc.
lAb work relAted to pAss trAnsIstor logIc.
conclusIons.
Pass Transistor Logic October 9, 2012 2
3. In electronics pass transistor logic (PTL) describes
several logic families used in the design of integrated
circuits.
It reduces the count of transistors used to make
different logic gates, by eliminating redundant
transistors.
Disadvantage that output levels are always lower than
the input level.
Pass Transistor Logic October 9, 2012 3
4. In conventional logic families input is applied to gate
terminal of transistor but in PTL it is also applied to
source /drain terminal.
These circuits act as switches use either NMOS
transistors or parallel pair of NMOS and PMOS
transistor called Transmission gate.
Here the width of PMOS is taken equal to NMOS so
that both transistors can pass the signal
simultaneously in parallel.
Pass Transistor Logic October 9, 2012 4
5. nMOS passes g=1 input ‘0’
Output Strong ‘0’
g g=1 input ‘1’
• strong ‘ 0’ Output weak ‘1’
• Weak ‘ 1 s d
pMOS passes g=0 input ‘0’
Output weak ‘0’
g
• Strong ‘ 1’ g=0 input ‘1’
s d Output strong ‘1’
• Weak ‘ 0’
Pass Transistor Logic October 9, 2012 5
6. pAss trAnsIstor logIc
g g=0, gb=1 g=1, gb=0
Switch is open Switch is closed
a b So when g=1
If input is ‘ 0’ then output will be
strong ‘ 0’ .
gb
If input is ‘ 1’ then output will be
strong ‘ 1’
Pass Transistor Logic October 9, 2012 6
7. Fewer devices to implement the logical functions as
compared to CMOS.
Example AND gate.
When B is “ 1” , top device
turns on and copies the input
A to output F.
When B is low, bottom device
turns on
and passes a “ 0” .
Pass Transistor Logic October 9, 2012 7
8. Some logical circuits using PTL
Pass Transistor Logic October 9, 2012 8
9.
10. This paper compares the use of complementary pass-transistor
logic (CPL) as more power-efficient than conventional CMOS
design. However, new comparisons performed on more efficient
CMOS circuit realizations and demonstrate CPL to be superior
to conventional CMOS in most cases with respect to speed,
area, and power-delay products. This is basically explained by
the fact that CPL gates uses less transistors, have smaller
capacitances, and are faster than gates in complementary
CMOS. In this paper 2:1 Multiplexer is designed using the
conventional CMOS design and CPL logic design and the
results are compared using Microwind and DSCH2 CMOS
layout tools.
October 9, 2012 Pass Transistor Logic 10
11. VLSI (Very large scale integration) implementation.
Major problems are heat dissipation and power consumptions.
Solutions have been proposed to decrease the power supply
voltage, switching frequency and capacitance of transistor.
2:1 MUX by using CMOS and CPL on MICROWIND/
DSCH2.
October 9, 2012 Pass Transistor Logic 11
12. Any logic function can be realized by NMOS pull-down and
PMOS pull-up networks connected between the gate output
and the power lines.
Fig. 1 Schematic of 2:1 MUX using CMOS Logic in DSCH2
October 9, 2012 Pass Transistor Logic 12
13. Timing operation performed on 2:1 MUX conventional
CMOS logic design, the rise delay and fall delay calculated is
0.012 ns and 0.012 ns respectively.
Fig.2 Timing diagram and layout structure
October 9, 2012 Pass Transistor Logic 13
14. PTL has been successfully used to implement digital systems
which are smaller, faster, and more energy efficient than static
CMOS implementations for the same designs.
Fig.3 Schematic of 2:1 MUX using CPL in DSCH2
October 9, 2012 Pass Transistor Logic 14
15. Timing operation performed on 2:1 MUX CPL design, the
rise delay and fall delay calculated is 0.005 ns and 0.004 ns
respectively.
Fig.4 Timing diagram and layout structure
October 9, 2012 Pass Transistor Logic 15
16. S.N. Parameters Conventional CMOS PASS TRANSISTOR
LOGIC
1 Width of Layout 21.7 μm (434 lambda) 11.3 μm (226 lambda)
2 Height Of Layout 7.0 μm (140 lambda) 5.8 μm (116 lambda)
3 Surface Area of Layout 151.9 μm2 65.5 μm2
4 Power Consumption 12.204 μW 1.381 μW
5 Rise Delay 0.012 ns 0.005 ns
6 Fall delay 0.012 ns 0.004 ns
7 No. of Transistor required 12 6
October 9, 2012 Pass Transistor Logic 16
18. A. P. Chandrakasan and R. W. Brodersen , “ Low Power Digital CMOS
Design, Kluwer, Norwell MA. 1995.
Neil Weste, Harris & Banerjee, CMOS VLSI Design: A Circuits and
Systems Perspective, 3rd Edition, Pearson Education, Boston, 2005, p1-16.
Zimmermann, R.; Fichtner, W.; “ Low-Power Logic Styles: CMOS versus
Pass-Transistor Logic” IEEE Transaction on Solid-State Circuits, Volume
32, Page(s) 1079-1090, Publication Year: 1997.
Microwind user manual and DSCH user manual. Retrieved February 2012
from Microwind commercial website: http://www.microwind.net.
Zhou, H.; Aziz, A.; “ Buffer Minimization in Pass Transistor Logic” , IEEE
Transactions on Computer-Aided Design of Integrated Circuits and
Systems, Volume 20, Page(s ) 693-697, May 2001.
October 9, 2012 Pass Transistor Logic 18