Amplifiers: Capture Signals andDrive Precision SystemsAdvanced Techniques of Higher Performance Signal Processing
Legal Disclaimer Notice of proprietary information, Disclaimers and Exclusions Of WarrantiesThe ADI Presentation is the p...
Today’s AgendaOperational amplifier design and applicationsOp amp noise considerationsInstrumentation amplifiers and ap...
Analog to Electronic Signal ProcessingSENSOR(INPUT)DIGITALPROCESSORAMP CONVERTERACTUATOR(OUTPUT)AMP CONVERTER4
Analog to Electronic Signal ProcessingSENSOR(INPUT)DIGITALPROCESSORAMP CONVERTERACTUATOR(OUTPUT)AMP CONVERTER5
Amplifiers and Operational AmplifiersAmplifiers Make a low-level, high-source impedance signal into a high-level, low-so...
Operational AmplifiersOperational Op amps can be configured with feedback networks in multiple ways to perform“operation...
Original Vacuum-Tube Op Amp from Philbrick Research in1953: It Used 300 V Supplies8
AD823 JFET Input Op Amp Simplified SchematicINPUTS+VS-VSQ57A=19Q44A=1Q43Q58Q62R44S1NS1PVBQ49Q61Q72J6J1Q48Q35Q53I1 Q56Q59A=...
Key Op Amp Performance FeaturesBandwidth and Slew Rate The speed of the op amp Bandwidth is the highest operating frequ...
Standard ConfigurationsNon-Inverting R1+-R2VINVOUTV1I1Vin11RVIin 21 II )(01221RRVVRRVVinoutinout;111RVI 1VVin )1(1...
Op Amp Error Sources12IDEALOFFSET VOLTAGE (Vos)INPUT IMPEDANCE (ZIN)INPUT BIAS CURRENT (Ib)INPUT OFFSET CURRENT(Ios)A+--+O...
AN “IDEAL” NON-INVERTING AMPLIFIER13+-VinVoutI1R1R2V1Vid1VVV idin outVRRRV *2111))(1(12idinout VVRRV 
DC + AC Errors of a CircuitPSRRVsCMRRVenAVRIVVicmvooutsBosid *14)(1idinout VVV ))*((1PSRRVsCMRRVenAVRIVVVcmvoou...
Noise Gain: The noise gain of an op amp cannever be less than the signal gain+-IN +-+-A B CR1R2 INR1R2R2R1INSignal Gain = ...
Total Noise CalculationFCL = CLOSED LOOP BANDWIDTHR1VONRpIn-In+R2VnVR2JVR1JVRPJ+= BW [(In-2)R22] [NG] + [(In+2)RP2] [NG] +...
Dominant Noise Source Determinedby Input ImpedanceCONTRIBUTIONFROMAMPLIFIERVOLTAGE NOISEAMPLIFIERCURRENT NOISEFLOWING IN R...
1/f Noise Bandwidth 1/f Corner Frequency is a figure of merit for op ampnoise performance (the lower the better) Typical...
The Peak-to-Peak Noise in the 0.1 Hz to10 Hz Bandwidth ADA452819ADA452897nV p-p
ADA4528-x World’s Most Accurate Op Amp LowNoise Zero-Drift Amplifier Key Features Lowest noise zero-drift amp 5.6 nV/√H...
Precision Weigh Scale Design Using the AD779124-Bit Sigma-Delta ADC with External ADA4528-1Zero-Drift Amplifiers (CN0216)2...
1-221) More capacitance, more noise peaking2) Total noise at the output = value of thenoise spectral density integrated ov...
ADI AmplifiersBased on Process InnovationsAdvanced Process Technology Bipolar JFET CMOS iCMOS® High Performance, Low ...
Precision Amplifier Enablers•Overvoltage Protection•Zero Crossover Distortion•Zero-Drift Op Amp•Bias Cancellation Circuitr...
AD8597/91 nV/√Hz Ultralow Noise Key Benefits Low Noise, High Precision Low Voltage Noise: 1 nV/Hz at 1 kHz, 76 nVfrom ...
Optimizing AC Performance in an 18-bit,250 kSPS, PulSAR Measurement Circuit(CN0261)26Noise optimized forMid-range frequenc...
Analog to Electronic Signal ProcessingSENSOR(INPUT)DIGITALPROCESSORAMP CONVERTERACTUATOR(OUTPUT)AMP CONVERTER27
20-Bit, Linear, Low Noise, Precision, Bipolar±10 V DC Voltage Source (CN0191)281 – ppm resolutionNeeds low noiseIn all com...
Without Buffer29DNL vs. Code INL vs. Code
Using a Rail-to-Rail Input Amplifier30Crossover point = 1.7 V away from rail.INL vs. CodeDNL vs. Code
SOLUTION: ADA4500 Zero Crossover Amp31DNL vs. Code INL vs. Code
What Can Op Amps Do?Op amps can do anything Amplify Filter Level shift Compare DriveThe circuit design becomes diff...
Specialty AmplifiersSpecialty Amplifiers Designed for a specific signal type Extract and amplify only the signal of int...
Integrated “Amplifier” Products342k2kZVYYXX10)21()21(CurrentSenseDifferenceAmpsInstrumentationAmplifiersVGAsMultiplier...
Single-Ended vs. Differential SignalsSingle-ended signals Signal is measured referred to ground When signals are bipola...
Instrumentation, Difference, and DifferentialAmplifiersInstrumentation Amplifiers Amplify differential inputs to a singl...
Op Amp Subtractor or Difference Amplifier37VOUT = (V2 – V1)R2R1R1 R2_+V1V2VOUTR1 R2R2R1=R2R1R2R1CRITICAL FOR HIGH CMR0.1% ...
AD8271 : Precision Difference Amplifier withProgrammable Gain38KEY SPECIFICATIONSDifference Amplifier: G = ½, 1, 2Single...
AD8270/AD8271 Flexible Gain Configurations39=07363-0531710kΩAD827110kΩ10kΩ10kΩ20kΩ20kΩ10kΩP4P3P2P1+INGND OUTOUTN1N2N310982...
AD8271 Application Example: Building HighSpeed In-AmpCN0122: High Speed Instrumentation Amplifier Using the AD8271Differe...
AD8277 Application Example – PrecisionAbsolute Value CircuitBenefits One single component Cost competitive Simple sing...
AD8276/AD8277/AD8278/AD8279 Applications –Building Current Sources (Continued)42R1R2RloadV+IoVrefVloadVoutAD8276Rg1 40kΩ-I...
The Generic Instrumentation Amplifier(In-Amp)43~~COMMONMODEVOLTAGEVCM+_RGIN-AMPGAIN = GVOUTVREFCOMMON MODE ERROR (RTI) =VC...
The Three Op Amp In-AmpVOUTRGR1R1R2R2R3R3+_+_+_VREFVOUT = VSIG • 1 +2R1RG+ VREFR3R2IF R2 = R3, G = 1 +2R1RGCMR 20logGAI...
Generalized Bridge Amplifier Using an In-Amp+VB+IN AMPREF VOUTRG+VS-VSR+RVBRRVOUT = GAINR+RR–RR–R45
1 MΩ10 nF10 kΩ10 kΩ1 nF1 nF100 kΩ1 µFAD8495PCBTracesThermocoupleRFIFilterThermocoupleAmplifierFilter for50/60 HzReferenceJ...
Different Circuit Topologies to build an In amp3-Op Amp 2-Op Amp47Indirect-Current Feedback Current-Mode Correction+IN...
CMRR vs. Frequency (Different Topologies)BEST GOOD48GOOD BETTERAD8421AD8420AD627AD8553
Input Common Mode Range in InstrumentationAmplifiersInput common-mode voltagerange is limited ininstrumentation amplifier...
50Key Features Low Power 115μA Industry Leading Gain Accuracy and Drift Gain Error: < 50ppm Gain Drift: < 0.5ppm/ C ...
51300mV operation above and below the supply rails with output swing completely independent of input common-mode voltageIn...
Single-Supply Data Acquisition System+2V+2V  1VVCM = +2.5VG = 10052AD8237
AD825x Digitally Programmable GainInstrumentation Amplifier (PGIA)AD8250 Gain settings of 1, 2, 5, 10AD8251 Fine gain se...
Additional In-Amp Expert ReadingAvailable Online: http://www.analog.com/en/content/cu_dh_designers_guide_to_instrumentat...
ADC Driver AmplifiersDriving ADC inputs ADC switching feeds transient back to input pins ADC driver amp must reject tra...
Typical Unbuffered Single-Ended Input Transients ofCMOS Switched Capacitor ADC2.57Note: Data Taken with 50 Source Resista...
ADC Driver582.4MHzBPFFROM50ΩSIGNALSOURCEADA4932-1VCM VDD1 VDD2 VIOVOCMAD8031AD76260.1µF0.1µF+5V+5V +2.5V +2.5VR3499ΩR5499Ω...
AD8475:Differential Funnel Amp and ADC Driver Key Features Active precision attenuation (0.4x or 0.8x) Level-translati...
AD8475: Funnel Amplifier + ADC DriverAD8475 AD7982REF+5V10kΩ10kΩ+IN 0.4x-IN 0.4xVOCM+5V+IN-IN20Ω20Ω270pF270pF1.35nF0.5V – ...
Precision, Low Power, Single-Supply, FullyIntegrated Differential ADC Driver for Industrial-LevelSignals (CN0180)61 Inter...
ADC Driver for High Speed ADCs100 MSPS 12-Bit ADC62
ADR45xx – Ultrahigh Precision, Low Noise,Voltage Reference Product OverviewKey Features Ultrahigh accuracy Voltage drif...
Benefits of Precision Current SensingPrecision Current Sensing allows for finer/more adjustments inAutomotive Control appl...
High-Side vs. Low-Side Current Sensing65+-
High-Side vs. Low-Side Current Sensing66
67TypicalApplicationsDC-DC CONVERTERSBANDWIDTHCMRR over frequencyResponse timePOWER SUPPLYMONITORINGCommon Mode RangeGain ...
AD8210 – Application Examples14VTocontrolcircuitryDC Motor Control DC/DC Converter42VShuntECUV OutG=20VsAD8210V Ref 2V Ref...
High Common-Mode Current SensingUsing the AD629 Difference AmplifierVCM = 270V for VS = 15V69Next generation AD8479 with...
[Circuit board pic here]Current Monitor with 500 V Common-ModeVoltage (CN0218)Circuit Features 500 V common mode 0.2% a...
Amplifiers Improve What We See…The clarity and contrast in this ultrasound comes from the very lownoise floor of the VGA, ...
…. And How We Live!Did you see an accident today?ADF4158Xmit ChannelSig. GeneratorPAAD8283Rx ChannelSignal PxingDSPANTENNA...
ADIsimOpAmp73
ADI Diff-Amp Calculator74
Downloadable Multisim SPICE75
Tweet it out! @ADI_News #ADIDC13What We CoveredOp amps are very versatile devices that can be set up for manyapplications...
Design Resources Covered in this SessionDesign Tools & Resources:Ask technical questions and exchange ideas online in ou...
Tweet it out! @ADI_News #ADIDC13[Circuit board pic here]Visit the Current Monitor with 500 V Common-Mode Voltage in the Ex...
Tweet it out! @ADI_News #ADIDC13Visit the Weigh Scale Demo in the ExhibitionRoom79Measure weights from0.1 g to 2000 gThis...
Upcoming SlideShare
Loading in …5
×

Amplifiers: Capture Signals and Drive Precision Systems (Design Conference 2013)

1,503 views

Published on

Amplifiers are the workhorses of data acquisition and transmission systems. They capture and amplify the low level signals from sensors and transmitters, and can pull these signals from high noise and high common-mode voltage levels. Amplifiers can also change the signal range and switch from single-ended to differential (or the reverse) to match exactly the input range of an ADC. This session covers the versatility and power of amplifiers in precision systems.

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,503
On SlideShare
0
From Embeds
0
Number of Embeds
124
Actions
Shares
0
Downloads
55
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Amplifiers: Capture Signals and Drive Precision Systems (Design Conference 2013)

  1. 1. Amplifiers: Capture Signals andDrive Precision SystemsAdvanced Techniques of Higher Performance Signal Processing
  2. 2. Legal Disclaimer Notice of proprietary information, Disclaimers and Exclusions Of WarrantiesThe ADI Presentation is the property of ADI. All copyright, trademark, and other intellectual property andproprietary rights in the ADI Presentation and in the software, text, graphics, design elements, audio and allother materials originated or used by ADI herein (the "ADI Information") are reserved to ADI and its licensors.The ADI Information may not be reproduced, published, adapted, modified, displayed, distributed or sold in anymanner, in any form or media, without the prior written permission of ADI.THE ADI INFORMATION AND THE ADI PRESENTATION ARE PROVIDED "AS IS". WHILE ADI INTENDS THE ADIINFORMATION AND THE ADI PRESENTATION TO BE ACCURATE, NO WARRANTIES OF ANY KIND ARE MADEWITH RESPECT TO THE ADI PRESENTATION AND THE ADI INFORMATION, INCLUDING WITHOUT LIMITATIONANY WARRANTIES OF ACCURACY OR COMPLETENESS. TYPOGRAPHICAL ERRORS AND OTHERINACCURACIES OR MISTAKES ARE POSSIBLE. ADI DOES NOT WARRANT THAT THE ADI INFORMATION ANDTHE ADI PRESENTATION WILL MEET YOUR REQUIREMENTS, WILL BE ACCURATE, OR WILL BEUNINTERRUPTED OR ERROR FREE. ADI EXPRESSLY EXCLUDES AND DISCLAIMS ALL EXPRESS ANDIMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT OF ANY THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. ADI SHALL NOT BERESPONSIBLE FOR ANY DAMAGE OR LOSS OF ANY KIND ARISING OUT OF OR RELATED TO YOUR USE OFTHE ADI INFORMATION AND THE ADI PRESENTATION, INCLUDING WITHOUT LIMITATION DATA LOSS ORCORRUPTION, COMPUTER VIRUSES, ERRORS, OMISSIONS, INTERRUPTIONS, DEFECTS OR OTHERFAILURES, REGARDLESS OF WHETHER SUCH LIABILITY IS BASED IN TORT, CONTRACT OR OTHERWISE.USE OF ANY THIRD-PARTY SOFTWARE REFERENCED WILL BE GOVERNED BY THE APPLICABLE LICENSEAGREEMENT, IF ANY, WITH SUCH THIRD PARTY.©2013 Analog Devices, Inc. All rights reserved.2
  3. 3. Today’s AgendaOperational amplifier design and applicationsOp amp noise considerationsInstrumentation amplifiers and applicationsADC driver amplifiersHigh common mode voltage applicationsAmplifier design tools3
  4. 4. Analog to Electronic Signal ProcessingSENSOR(INPUT)DIGITALPROCESSORAMP CONVERTERACTUATOR(OUTPUT)AMP CONVERTER4
  5. 5. Analog to Electronic Signal ProcessingSENSOR(INPUT)DIGITALPROCESSORAMP CONVERTERACTUATOR(OUTPUT)AMP CONVERTER5
  6. 6. Amplifiers and Operational AmplifiersAmplifiers Make a low-level, high-source impedance signal into a high-level, low-sourceimpedance signal Op amps, power amps, RF amps, instrumentation amps, etc. Most complex amplifiers built up from combinations of op ampsOperational amplifiers Three-terminal device (plus power supplies) Amplify a small signal at the input terminals to a very, very large one at theoutput terminal6
  7. 7. Operational AmplifiersOperational Op amps can be configured with feedback networks in multiple ways to perform“operations” on input signals “Operations” include positive or negative gain, filtering, nonlinear transferfunctions, comparison, summation, subtraction, reference buffering, differentialamplification, integration, differentiation, etc.Applications Fundamental building block for analog design Sensor input amplifier Simple and complex filters – antialiasing ADC driver7
  8. 8. Original Vacuum-Tube Op Amp from Philbrick Research in1953: It Used 300 V Supplies8
  9. 9. AD823 JFET Input Op Amp Simplified SchematicINPUTS+VS-VSQ57A=19Q44A=1Q43Q58Q62R44S1NS1PVBQ49Q61Q72J6J1Q48Q35Q53I1 Q56Q59A=1Q17A=19OUTPUTQ60R28(-)(+)VBE + 0.3VBIAS CURRENT = 25pA MAX @ +25 CINPUT OFFSET VOLTAGE = 0.8mV MAX @ +25 CINPUT VOLTAGE NOISE = 15nV/HzINPUT CURRENT NOISE = 1fA/Hz9
  10. 10. Key Op Amp Performance FeaturesBandwidth and Slew Rate The speed of the op amp Bandwidth is the highest operating frequency of the op amp Slew rate is the maximum rate of change of the output Determined by the frequency of the signal and the gain neededOffset Voltage and Current The errors of the op amp Determines measurement accuracyNoise Op amp noise limits how small a signal can be amplified with good fidelity10
  11. 11. Standard ConfigurationsNon-Inverting R1+-R2VINVOUTV1I1Vin11RVIin 21 II )(01221RRVVRRVVinoutinout;111RVI 1VVin )1(1212111RRVVRRVVVoutout;I2Inverting+-R1R2VINVOUTVinI1Virtual GroundBecause +VIN = -VIN11
  12. 12. Op Amp Error Sources12IDEALOFFSET VOLTAGE (Vos)INPUT IMPEDANCE (ZIN)INPUT BIAS CURRENT (Ib)INPUT OFFSET CURRENT(Ios)A+--+OUTPUT IMPEDANCE(ZOUT) IB – The Current into the Inputs[~pA to mA] Vos – The Difference in VoltageBetween the Inputs [µV to mV] IOS – The Difference Between the+ IB and – IB [~IB /10] ZIN – Input Impedance [MW to GW] ZOUT – Output Impedance [<1 W] Avo – Open Loop Gain [V/mV] BW – Finite Bandwidth [ kHz to GHz)
  13. 13. AN “IDEAL” NON-INVERTING AMPLIFIER13+-VinVoutI1R1R2V1Vid1VVV idin outVRRRV *2111))(1(12idinout VVRRV 
  14. 14. DC + AC Errors of a CircuitPSRRVsCMRRVenAVRIVVicmvooutsBosid *14)(1idinout VVV ))*((1PSRRVsCMRRVenAVRIVVVcmvooutsBosinout0_ vGAINLOOP ASince en gets multiplied by 1we get the name “noise gain”+-R2RsVoutVidVin
  15. 15. Noise Gain: The noise gain of an op amp cannever be less than the signal gain+-IN +-+-A B CR1R2 INR1R2R2R1INSignal Gain = 1 + R2/R1Noise Gain = 1 + R2/R1Signal Gain =- R2/R1Noise Gain = 1 + R2/R1Signal Gain =- R2/R1Noise Gain = 1 +R2R1 R3 Voltage Noise and Offset Voltage of the op amp are reflected to theoutput by the Noise Gain. Noise Gain, not Signal Gain, is relevant in assessing stability. Circuit C has unchanged Signal Gain, but higher Noise Gain, thusbetter stability, worse noise, and higher output offset voltage.INA B CR1R2 INR1R2R2R1INSignal Gain = 1 + R2/R1Noise Gain = 1 + R2/R1Signal Gain = R2/R1Noise Gain = 1 + R2/R1Signal Gain =Noise Gain = 1 +R2+-IN +-+-A B CR1R2 INR1R2R2R1INSignal Gain = 1 + R2/R1Noise Gain = 1 + R2/R1Signal Gain =- R2/R1Noise Gain = 1 + R2/R1Signal Gain =- R2/R1Noise Gain = 1 +R2R1 R3INA B CR1R2 INR1R2R2R1INSignal Gain = 1 + R2/R1Noise Gain = 1 + R2/R1Signal Gain = R2/R1Noise Gain = 1 + R2/R1Signal Gain =Noise Gain = 1 +R2+-IN +-+-A B CR1R2 INR1R2R2R1INSignal Gain = 1 + R2/R1Noise Gain = 1 + R2/R1Signal Gain =- R2/R1Noise Gain = 1 + R2/R1Signal Gain =- R2/R1Noise Gain = 1 +R2R1 R3 Voltage Noise and Offset Voltage of the op amp are reflected to theoutput by the Noise Gain. Noise Gain, not Signal Gain, is relevant in assessing stability. Circuit C has unchanged Signal Gain, but higher Noise Gain, thusbetter stability, worse noise, and higher output offset voltage.INA B CR1R2 INR1R2R2R1INSignal Gain = 1 + R2/R1Noise Gain = 1 + R2/R1Signal Gain = R2/R1Noise Gain = 1 + R2/R1Signal Gain =Noise Gain = 1 +R2+-IN +-+-A B CR1R2 INR1R2R2R1INSignal Gain = 1 + R2/R1Noise Gain = 1 + R2/R1Signal Gain =- R2/R1Noise Gain = 1 + R2/R1Signal Gain =- R2/R1Noise Gain = 1 +R2R1 R3INA B CR1R2 INR1R2R2R1INSignal Gain = 1 + R2/R1Noise Gain = 1 + R2/R1Signal Gain = R2/R1Noise Gain = 1 + R2/R1Signal Gain =Noise Gain = 1 +R215
  16. 16. Total Noise CalculationFCL = CLOSED LOOP BANDWIDTHR1VONRpIn-In+R2VnVR2JVR1JVRPJ+= BW [(In-2)R22] [NG] + [(In+2)RP2] [NG] + VN2 [NG] + 4kTR2 [NG-1] + 4kTR1 [NG-1] + 4kTRP [NG]VONBW = 1.57 FCLFCL = CLOSED LOOP BANDWIDTHR1VONRpIn-In+R2VnVR2JVR1JVRPJ+R1VONRpIn-In+R2VnVR2JVR1JVRPJ+= BW [(In-2)R22] [NG] + [(In+2)RP2] [NG] + VN2 [NG] + 4kTR2 [NG-1] + 4kTR1 [NG-1] + 4kTRP [NG]VON = BW [(In-2)R22] [NG] + [(In+2)RP2] [NG] + VN2 [NG] + 4kTR2 [NG-1] + 4kTR1 [NG-1] + 4kTRP [NG]VONBW = 1.57 FCL16
  17. 17. Dominant Noise Source Determinedby Input ImpedanceCONTRIBUTIONFROMAMPLIFIERVOLTAGE NOISEAMPLIFIERCURRENT NOISEFLOWING IN RJOHNSONNOISE OF RVALUES OF R0 3k 300k3 3 3003730070RTI NOISE (nV /  Hz)Dominant Noise Source is HighlightedR+–EXAMPLE: OP27Voltage Noise = 3nV / HzCurrent Noise = 1pA / HzT = 25°COP27R2R1Neglect R1 and R2Noise ContributionCONTRIBUTIONFROMAMPLIFIERVOLTAGE NOISEAMPLIFIERCURRENT NOISEFLOWING IN RJOHNSONNOISE OF RVALUES OF R0 3k 300k3 3 3003730070RTI NOISE (nV /  Hz)Dominant Noise Source is HighlightedR+–EXAMPLE: OP27Voltage Noise = 3nV / HzCurrent Noise = 1pA / HzT = 25°COP27R2R1Neglect R1 and R2Noise Contribution17AD8675AD8675
  18. 18. 1/f Noise Bandwidth 1/f Corner Frequency is a figure of merit for op ampnoise performance (the lower the better) Typical Ranges: 2Hz to 2kHz Voltage Noise and Current Noise do not necessarilyhave the same 1/f corner frequency3dB/OctaveWHITE NOISELOG fCORNER1fNOISEnV / HzorHzen, inkFCk FC1fen, in =3dB/OctaveWHITE NOISELOG fCORNER1fNOISEnV / HzorpA / Hzen, inkFCk FC1fen, in = 1/f Corner Frequency is a figure of merit for op ampnoise performance (the lower the better) Typical Ranges: 2Hz to 2kHz Voltage Noise and Current Noise do not necessarilyhave the same 1/f corner frequency3dB/OctaveWHITE NOISELOG fCORNER1fNOISEnV / HzorHzen, inkFCk FC1fen, in =3dB/OctaveWHITE NOISELOG fCORNER1fNOISEnV / HzorpA / Hzen, inkFCk FC1fen, in =18
  19. 19. The Peak-to-Peak Noise in the 0.1 Hz to10 Hz Bandwidth ADA452819ADA452897nV p-p
  20. 20. ADA4528-x World’s Most Accurate Op Amp LowNoise Zero-Drift Amplifier Key Features Lowest noise zero-drift amp 5.6 nV/√Hz noise floor No 1/f noise High DC accuracy Low offset voltage: 2.5 µV max Low offset voltage drift: 0.015 µV/ºC max Rail-to-rail input/output Operating voltage: 2.2 V to 5.5 V Applications Transducer applications Temperature measurements Electronic scales Medical instrumentation Battery-powered instruments20Vos TCVos Isy / Amp CMRR Bandwidth Slew Rate Temp Range Op. Supply2.5 V max 0.015 V/ºC max 1.8 mA max 115 dB min 4 MHz 0.4 V/s -40 C - 125 C 2.2 V to 5.5 VADA4528-1 Single Released ADA4528-2 Dual In DevelopmentPackage: 8-lead MSOP, 8-lead LFCSP-8 (3 x 3)Price: $1.15 1ku Package: 8-lead MSOP, 8-lead LFCSP (3 x 3) Sample Availability: NowNo 1/f Noise5.6nV/Hz ADI AdvantagesWorld’s Most Accurate Op Amp, Lowest Voltage Noise Zero-Drift Op Amp
  21. 21. Precision Weigh Scale Design Using the AD779124-Bit Sigma-Delta ADC with External ADA4528-1Zero-Drift Amplifiers (CN0216)2124-bitADCNoise optimized forDC measurements
  22. 22. 1-221) More capacitance, more noise peaking2) Total noise at the output = value of thenoise spectral density integrated over theentire bandwidth3) Noise is dominated by the noise peak.4) Assuming system –3 dB bandwidth of16 MHz (25 MHz noise bandwidth)CL = 8 pF CL = 220 pF CL = 470 pF95 µV rms 110 µV rms 115 µV rms
  23. 23. ADI AmplifiersBased on Process InnovationsAdvanced Process Technology Bipolar JFET CMOS iCMOS® High Performance, Low Noise CMOS Process iPolar® High Performance, Low Noise Bipolar Process LD20 Enhanced CMOS23
  24. 24. Precision Amplifier Enablers•Overvoltage Protection•Zero Crossover Distortion•Zero-Drift Op Amp•Bias Cancellation CircuitryDesignTechniques•Low Noise Processes•High Voltage Processes•Feature Rich ProcessesProcessTechnology•DigiTrim / In Pkg Trim•Laser TrimTrimTechniques•Micro Packages•WLCSP/ Bumped Die•Low Stress PolyimidePackageTechnology•Strip Testing•TCVOS on StripTestTechniques24•Improved Robustness•Higher Performance Amplifiers•Higher Precision in Small Plastic Packages•High Precision CMOS Products•Higher Precision in Small Plastic Packages•Greater User Flexibility - Small Form Factors•Greater Functionality in Small Footprint• Higher Precision, Improves Offset and TCVOSPerformanceResulting Benefits•Ultralow Noise AMP/REF Designs•Higher Voltage Amplifiers (100 V)•Higher Integration and Added Features
  25. 25. AD8597/91 nV/√Hz Ultralow Noise Key Benefits Low Noise, High Precision Low Voltage Noise: 1 nV/Hz at 1 kHz, 76 nVfrom 0.1 Hz to 1 Hz Low Current Noise: 1.5 pA/√Hz Unity Gain Stable with High 50 mA Output Drive ±5V to ±15V Operation25Noise THD+N Vos CMRR Bandwidth Slew Rate Temp Range Price @ 1k1 nV/√Hz –105 dB 120 V max 120 dB 10 MHz 16 V/s–40 C to85 CSee website 8-lead SOIC and 8-leadLFCSP (3x3) Released SOIC ReleasedAD8597 Single AD8599 DualOUT A 1- IN A 2+ IN A 3- V 4+ V8OUT B7- IN B6+ IN B5AD8599TOP VIEW(Not to Scale)OUT A 1- IN A 2+ IN A 3- V 4+ V8OUT B7- IN B6+ IN B5AD8599TOP VIEW(Not to Scale) Applications Professional audio preamps ATE Imaging systems Medical instrumentation Precision detectors
  26. 26. Optimizing AC Performance in an 18-bit,250 kSPS, PulSAR Measurement Circuit(CN0261)26Noise optimized forMid-range frequencies
  27. 27. Analog to Electronic Signal ProcessingSENSOR(INPUT)DIGITALPROCESSORAMP CONVERTERACTUATOR(OUTPUT)AMP CONVERTER27
  28. 28. 20-Bit, Linear, Low Noise, Precision, Bipolar±10 V DC Voltage Source (CN0191)281 – ppm resolutionNeeds low noiseIn all components
  29. 29. Without Buffer29DNL vs. Code INL vs. Code
  30. 30. Using a Rail-to-Rail Input Amplifier30Crossover point = 1.7 V away from rail.INL vs. CodeDNL vs. Code
  31. 31. SOLUTION: ADA4500 Zero Crossover Amp31DNL vs. Code INL vs. Code
  32. 32. What Can Op Amps Do?Op amps can do anything Amplify Filter Level shift Compare DriveThe circuit design becomes difficult Matching multiple amplifiers Circuit complexity Precision passive components32
  33. 33. Specialty AmplifiersSpecialty Amplifiers Designed for a specific signal type Extract and amplify only the signal of interest Pick off a small differential signal from a large common-mode voltage Capture and demodulate a low-level AC signal Compress a high-dynamic range signal Provide automatic or controlled gain-changing Send and receive precision signals Provide high-speed low-impedance power output Use the analog domain to its best advantage to prepare a clean signal for thedata converter33
  34. 34. Integrated “Amplifier” Products342k2kZVYYXX10)21()21(CurrentSenseDifferenceAmpsInstrumentationAmplifiersVGAsMultipliersRMS-DC Converters ThermocoupleAmplifiers5mV/C TmRMS dtTTVV02sin1
  35. 35. Single-Ended vs. Differential SignalsSingle-ended signals Signal is measured referred to ground When signals are bipolar (+ and –), negative supplies needed AC signals are typically bipolar or need special “floating,” or capacitive coupling Ground often carries high noise from other signals or power, compromising thesignalDifferential signals Both sides of the signal float “off ground” Signals are separated from ground and other signals High frequency and accuracy usually need differential handling Common mode (average) can be set for single supply Specialized differential/difference amplifiers are needed35
  36. 36. Instrumentation, Difference, and DifferentialAmplifiersInstrumentation Amplifiers Amplify differential inputs to a single-ended output Normally both amplifier inputs are high impedance Provide high gain (up to 10,000) and low noise Normally handle low-level signals from sensorsDifference Amplifiers Amplify differential inputs from high common-mode voltage levels Often include input attenuator to allow operation outside supplies High common-mode rejection even at high frequenciesDifferential Amplifiers High frequency amplifiers with differential input and output Handle higher-level signals at lower gains Typically used for line driving/receiving and ADC driving36
  37. 37. Op Amp Subtractor or Difference Amplifier37VOUT = (V2 – V1)R2R1R1 R2_+V1V2VOUTR1 R2R2R1=R2R1R2R1CRITICAL FOR HIGH CMR0.1% TOTAL MISMATCH YIELDS  66dB CMR FOR R1 = R2CMR = 20 log101 +R2R1KrWhere Kr = Total FractionalMismatch of R1/ R2 TOR1/R2EXTREMELY SENSITIVE TO SOURCE IMPEDANCE IMBALANCEREF
  38. 38. AD8271 : Precision Difference Amplifier withProgrammable Gain38KEY SPECIFICATIONSDifference Amplifier: G = ½, 1, 2Single-ended Amplifier: G = -2 to +3Low Distortion: 110 dB THD + NTypical (G=1)15 MHz Bandwidth80 dB Min CMRR (G=1)0.08% Max Gain Error2 ppm/°C Max Gain Drift2.6 mA Max Supply CurrentWide Power Supply Range: ±2.5 V to±18 VKey Benefits Low Distortion  Higher Performance Versatile Gain Configurations  Easy to UseTarget Applications High Performance Audio/Video In-Amp Building Block ADC Driver17610kΩAD827110kΩ10kΩ10kΩ20kΩ20kΩ10kΩ–VSP4P3P2P1+VSOUTN1N2N307363-03210982345
  39. 39. AD8270/AD8271 Flexible Gain Configurations39=07363-0531710kΩAD827110kΩ10kΩ10kΩ20kΩ20kΩ10kΩP4P3P2P1+INGND OUTOUTN1N2N31098234–IN–IN+IN5kΩ5kΩ10kΩ10kΩGND=–IN+IN10kΩ5kΩ5kΩ10kΩGND07363-0551710kΩAD827110kΩ10kΩ10kΩ20kΩ20kΩ10kΩP4P3P2P1OUTOUTN1N2N31098234–INGND+INOUTG = ½, Ground ReferenceG = 1, Mid-Supply ReferenceG = 2, Ground ReferenceMore in Datasheet
  40. 40. AD8271 Application Example: Building HighSpeed In-AmpCN0122: High Speed Instrumentation Amplifier Using the AD8271Difference Amplifier and the ADA4627-1 JFET Input Op AmpGain-bandwidth product of 20MHz at gain of 200 www.analog.com/CN0122 Uses monolithic difference amplifier for the output amplifier, thereby providinggood dc/ac accuracy with fewer components40
  41. 41. AD8277 Application Example – PrecisionAbsolute Value CircuitBenefits One single component Cost competitive Simple single-supply operation Wide input and supply range Low supply current Higher performance Fast 0 V crossover response Gain accuracy Offset voltage, temp drifts Low noise gain41AD8277A1–+AD8277A2–+VINVOUT = | VIN |RRRRRRRRA1–+A2–+VINVOUT = | VIN |R1R2R4R3 R5D1D2R1, R2, R3 = 10kΩR4, R5 = 20kΩConventional precision absolute value circuit requiresmany fast, high precision (i.e., expensive) components,and has performance issues.
  42. 42. AD8276/AD8277/AD8278/AD8279 Applications –Building Current Sources (Continued)42R1R2RloadV+IoVrefVloadVoutAD8276Rg1 40kΩ-INRg2 40kΩRf1 40kΩ+–23+IN4-VS1REF6OUT57+VSRf2 40kΩSENSER1Rload+VIoVrefVloadAD8603+5VVout4 43125AD8276Rg1 40kΩ-INRg2 40kΩRf1 40kΩ+–23+IN4-VS1REF6OUT57+VSRf2 40kΩSENSER1R2RloadIoVrefVloadVoutAD8276Rg1 40kΩ-INRg2 40kΩRf1 40kΩ+–23+IN4-VS1REF6OUT57+VSRf2 40kΩSENSEV+IoVref5VAD8276Rg1 40kΩ-INRg2 40kΩRf1 40kΩ+–23+IN4-VS1REF6OUT57+VSRf2 40kΩSENSER1RloadVloadVoutCost sensitive, ≤15 mA outputHigher accuracy, >15 mA output Higher accuracy, ≤15 mA outputCost sensitive, >15 mA output
  43. 43. The Generic Instrumentation Amplifier(In-Amp)43~~COMMONMODEVOLTAGEVCM+_RGIN-AMPGAIN = GVOUTVREFCOMMON MODE ERROR (RTI) =VCMCMRR~RS/2RS/2RS~~VSIG2VSIG2+_+_
  44. 44. The Three Op Amp In-AmpVOUTRGR1R1R2R2R3R3+_+_+_VREFVOUT = VSIG • 1 +2R1RG+ VREFR3R2IF R2 = R3, G = 1 +2R1RGCMR 20logGAIN × 100% MISMATCHCMR 20logGAIN × 100% MISMATCHCMR 20logGAIN × 100% MISMATCH~~~~~~VCM+_+_VSIG2VSIG2A1A2A344
  45. 45. Generalized Bridge Amplifier Using an In-Amp+VB+IN AMPREF VOUTRG+VS-VSR+RVBRRVOUT = GAINR+RR–RR–R45
  46. 46. 1 MΩ10 nF10 kΩ10 kΩ1 nF1 nF100 kΩ1 µFAD8495PCBTracesThermocoupleRFIFilterThermocoupleAmplifierFilter for50/60 HzReferenceJunctionMeasurementJunctionCommon Modefc = 16 kHzDifferentialfc = 1.3 kHzIncludesReferenceJunctionCompensationfc = 1.6 Hz5 mV/°CGroundConnection5VREFTypical In-Amp ApplicationsSensor Interface Pressure Strain Temperature Vibration Current sensingMeasurement of Biopotentials EEG ECGMarket Segments INI, H/C, PCTL, MIL/AERO,ATE, AUTO…46
  47. 47. Different Circuit Topologies to build an In amp3-Op Amp 2-Op Amp47Indirect-Current Feedback Current-Mode Correction+IN–INOUTREF+IN–INOUTREFOUTREFGM1 GM2(G-1)RR+IN–IN+IN–INOUTREF2IEIEIE = (V – V )/R1R1R2–IN+IN
  48. 48. CMRR vs. Frequency (Different Topologies)BEST GOOD48GOOD BETTERAD8421AD8420AD627AD8553
  49. 49. Input Common Mode Range in InstrumentationAmplifiersInput common-mode voltagerange is limited ininstrumentation amplifiers This is not the same as the inputvoltage range of each input Internal amplifiers may getsaturated in the presence of largecommon-mode voltages This behavior usually limits singlesupply operation at low voltagelevelsThe “diamond” plots are agraphical representation ofthese operational limits The amplifier will only operateinside the plot Sometimes is necessary to changethe gain, reference voltage or powersupply levels49
  50. 50. 50Key Features Low Power 115μA Industry Leading Gain Accuracy and Drift Gain Error: < 50ppm Gain Drift: < 0.5ppm/ C High CMRR CMRR: 110dB @ all gains (DC to 60Hz) Wide Input Common Mode Range GND – 0.3V to Vs + 0.3V Excellent DC Performance Input Offset: 60μV Offset Drift: 0.2μV/ C Other Key Specifications Single supply: 1.8V to 5.0V Noise RTI: 1.5μVpp (0.1 to10Hz) 70nV/RtHz @ 1kHz Bandwidth: 10kHz @ G=100 Gain Range: 1-1000 Input RFI Protection Package: 8L MSOPApplications Medical Instrumentation Remote Sensing and Hand Held Instrumentation Precision Bridge and Current Sense Measurements Consumer Peripherals – Gaming, Distributed ComputingSetting theGain–IN+INVREFR2R1G = 1+R2R1AD8237 VOUTREFFBAD8237 - Micro Power, Zero-Drift In Amp
  51. 51. 51300mV operation above and below the supply rails with output swing completely independent of input common-mode voltageIndustry Leading Input Voltage Range
  52. 52. Single-Supply Data Acquisition System+2V+2V  1VVCM = +2.5VG = 10052AD8237
  53. 53. AD825x Digitally Programmable GainInstrumentation Amplifier (PGIA)AD8250 Gain settings of 1, 2, 5, 10AD8251 Fine gain setting of 1, 2, 4, 8AD8253 Coarse gain setting of 1, 10, 100, 1000Low noise and low offset with 10MHz bandwidth54A1 A0DGND WRAD8253+VS –VS REFOUT+INLOGIC–IN 1108 374562906983-001
  54. 54. Additional In-Amp Expert ReadingAvailable Online: http://www.analog.com/en/content/cu_dh_designers_guide_to_instrumentation_amps/fca.htmlMore Resources Under www.analog.com/inamps55
  55. 55. ADC Driver AmplifiersDriving ADC inputs ADC switching feeds transient back to input pins ADC driver amp must reject transients to provide accurate signalHigh Performance ADCs Recent high performance ADCs have 16 bits and more at 200 MSPS andhigher Such performance requires a differential input signalDifferential Amplifiers Differential or single-ended input converted to differential output Low impedance output stage rejects ADC switching spikes Common-mode level set and gain setting allow optimum match to ADC rangeVoltage Reference Buffer ADC transients can reflect back to reference output Op amp buffer with low output impedance at high frequency may be needed56
  56. 56. Typical Unbuffered Single-Ended Input Transients ofCMOS Switched Capacitor ADC2.57Note: Data Taken with 50 Source ResistancesSAMPLING CLOCK
  57. 57. ADC Driver582.4MHzBPFFROM50ΩSIGNALSOURCEADA4932-1VCM VDD1 VDD2 VIOVOCMAD8031AD76260.1µF0.1µF+5V+5V +2.5V +2.5VR3499ΩR5499ΩR253.6ΩR153.6ΩC12.2nFR439Ω0.1µF0.1µF0.1µFR7499ΩR6499Ω+2.048V15 6 7 8–FB29+IN3 –IN4 +FB16 15 14 13+7.25V–2.5V+VS–VS–OUT+OUTPADR833ΩR933Ω1110C556pFC656pFIN–IN+0V TO+4.096V+4.096VTO 0VGND0.1µF 0.1µF 0.1µFADA4932 differential output drives differential input of 16-bit 10 MSPS AD7626ADC
  58. 58. AD8475:Differential Funnel Amp and ADC Driver Key Features Active precision attenuation (0.4x or 0.8x) Level-translating VOCM pin sets output commonmode Single-ended to differential conversion Differential rail-to-rail output Input range beyond the rail Key Specifications 150 MHz bandwidth 10 nV/√Hz output noise 50 V/μS slew rate –112 dB THD + N 1 ppm/°C max gain drift 500 μV max output offset 3 mA supply current59Benefits Connect industrial sensors to highprecision differential ADCs Simplify design Enable quick development Reduce PCB size Reduce costApplications Process control modules Data acquisition systems Medical monitoring devices ADC driverLow VoltageADC InputsLargeInputSignal
  59. 59. AD8475: Funnel Amplifier + ADC DriverAD8475 AD7982REF+5V10kΩ10kΩ+IN 0.4x-IN 0.4xVOCM+5V+IN-IN20Ω20Ω270pF270pF1.35nF0.5V – 4.5VVOUT(DIFF) ±4V0.1µF4V 2.5V0.5V – 4.5VVOUT(DIFF) ±4V4V 2.5VSNR=97dBTHD=-113dBADR4350V±10V60 Interface ±10 V or ±5 V signal on asingle-supply amplifier Integrate 4 Steps in 1 Attenuate Single-ended-to-differential conversion Level-shift Drive ADC Drive differential 18-bit SAR ADCup to 4 MSPS with few externalcomponents
  60. 60. Precision, Low Power, Single-Supply, FullyIntegrated Differential ADC Driver for Industrial-LevelSignals (CN0180)61 Interface ±10 V or ±5 V signal on asingle-supply amplifier Integrate 4 Steps in 1 Attenuate Single-ended-to-differential conversion Level-shift Drive ADC Drive differential 18-bit SAR ADCup to 4 MSPS with few externalcomponents
  61. 61. ADC Driver for High Speed ADCs100 MSPS 12-Bit ADC62
  62. 62. ADR45xx – Ultrahigh Precision, Low Noise,Voltage Reference Product OverviewKey Features Ultrahigh accuracy Voltage drift: 2 ppm/°C max., B grade• 5 ppm/°C max., A grade Low initial output voltage error: 0.02% max. Long-term drift: 25 ppm/1,000 hours typ. Excellent noise performance 1/f noise: <0.5 ppm,pp (0.1 Hz to 10 Hz) Wideband noise: <5 μV rms (10 Hz to 10 kHz) Versatility Input voltage range: 3 V to 15 V Low dropout: 200 mV for +2 mA at +125°C• 1 V for ADR4520, 0.5 V for ADR4525 Output drive: ±10 mA – no buffer amp needed Quiescent current: 800 µA max Wide temperature range -40oC to +125oC operationApplications Medical/industrial/test instrumentation Automotive hybrid battery monitoring63Package Temp Price8-lead SOIC–40 C to+125 C$2.45 @ 1k (A)$3.45 @ 1k (B)All Options of the ADR45xx FamilyADR4520 2.048 V SamplesADR4525 2.5 V NowADR4530 3.0 VADR4533 3.3 V RTSADR4540 4.096 V Mar 2012ADR4550 5.0 V
  63. 63. Benefits of Precision Current SensingPrecision Current Sensing allows for finer/more adjustments inAutomotive Control applications Automatic Transmission: Larger number of gear options and smoother shifting Diesel Injection: Better mileage, lower emissions, reduced noise Electric Power Steering: Facilitates transition from Hydraulic to Electro-Hydraulic Electric Motor: enables higher performance systems Brake-by-wire and Electric Parking Brake Adaptive Suspension Advanced Wiper / Memory Seat / One-Touch Down WindowIn General, High-side current sensing allows for:• Lower cost wiring• Improved diagnostics capabilities• Precise current sensing• Improved system efficiencies64
  64. 64. High-Side vs. Low-Side Current Sensing65+-
  65. 65. High-Side vs. Low-Side Current Sensing66
  66. 66. 67TypicalApplicationsDC-DC CONVERTERSBANDWIDTHCMRR over frequencyResponse timePOWER SUPPLYMONITORINGCommon Mode RangeGain valueResponse timeVALVE/SOLENOID CONTROLTEMPERATURE DRIFTCommon mode rejectionAveraging functionMOTOR CONTROLBIDIRECTIONAL SENSETEMPERATURE DRIFTCommon mode rejectionOutput linearity to 0V inputResponse timeSOLAR PANEL MONITORINGInverter / Power MaximizingCommon Mode RangeGain valueResponse timePOWER AMPLIFERSTEMPERATURE DRIFTCommon mode rejection
  67. 67. AD8210 – Application Examples14VTocontrolcircuitryDC Motor Control DC/DC Converter42VShuntECUV OutG=20VsAD8210V Ref 2V Ref 1- IN+ INGNDReference5VV OutG=20VsAD8210V Ref 2V Ref 1- IN+ INGNDV BatteryMotor Control Applications Industrial DC Motor Control Medical Imaging Machine Motor Control Automotive DC Motor and Solenoid ControlDC/DC Converter Applications Power Supply Base Station Battery Charging Automotive Battery Charging68
  68. 68. High Common-Mode Current SensingUsing the AD629 Difference AmplifierVCM = 270V for VS = 15V69Next generation AD8479 with 600V common mode range coming soon
  69. 69. [Circuit board pic here]Current Monitor with 500 V Common-ModeVoltage (CN0218)Circuit Features 500 V common mode 0.2% accuracyCircuit Benefits Minimal loading Fast responseInputs Power shunt resistor70Target Applications Key Parts Used Interface/ConnectivityMetering and EnergyMonitoringMotor and PowerControlPower SuppliesAD8212AD8605AD7171ADuM5402IsolatedSPI
  70. 70. Amplifiers Improve What We See…The clarity and contrast in this ultrasound comes from the very lownoise floor of the VGA, the constancy of the noise over the entire gainrange, and the very tight delay variance.AD833271
  71. 71. …. And How We Live!Did you see an accident today?ADF4158Xmit ChannelSig. GeneratorPAAD8283Rx ChannelSignal PxingDSPANTENNAADAS systems require multi-channel radar receivers, with finely controlledgain and low channel crosstalk, at very low noise and power factors.By offering these, AD8283 AFE makes it possible to eliminate most accidentsat speeds less than 25 mph.72
  72. 72. ADIsimOpAmp73
  73. 73. ADI Diff-Amp Calculator74
  74. 74. Downloadable Multisim SPICE75
  75. 75. Tweet it out! @ADI_News #ADIDC13What We CoveredOp amps are very versatile devices that can be set up for manyapplicationsOp amps cannot amplify an input signal with a higher gain than theirown noise – pick low noise op ampsSpecialty amplifiers are built-up combinations of op amps withperformance tailored to applicationsHigh performance ADCs need high performance driver amplifiers toobtain full accuracyDifferential amplifiers can pick off small signals from very highcommon-mode voltagesNew software and online design tools greatly simplify productselection and system design76
  76. 76. Design Resources Covered in this SessionDesign Tools & Resources:Ask technical questions and exchange ideas online in ourEngineerZone™ Support Community Choose a technology area from the homepage: ez.analog.com Access the Design Conference community here: www.analog.com/DC13community77Name Description URLADIsimOpamp On-line tool to select and configure op amps http://designtools.analog.com/dtAPETWeb/dtAPETMain.aspxDiff Amp Calculator On-line tool to design differential amp circuits http://www.analog.com/en/amplifier-linear-tools/adi-diff-amp-calc/topic.htmlMultisim SPICE Downloadable general purpose SPICE simulator http://www.analog.com/en/amplifier-linear-tools/multisim/topic.html
  77. 77. Tweet it out! @ADI_News #ADIDC13[Circuit board pic here]Visit the Current Monitor with 500 V Common-Mode Voltage in the Exhibition RoomCircuit Features 500 V common mode 0.2% accuracyCircuit Benefits Minimal loading Fast responseInputs Power shunt resistor78Target Applications Key Parts Used Interface/ConnectivityMetering and EnergyMonitoringMotor and Power ControlAD8212AD8605AD7171ADuM5402IsolatedSPIThis demo board is available for purchase:www.analog.com/DC13-hardware
  78. 78. Tweet it out! @ADI_News #ADIDC13Visit the Weigh Scale Demo in the ExhibitionRoom79Measure weights from0.1 g to 2000 gThis demo board is available for purchase:www.analog.com/DC13-hardwareSOFTWARE OUTPUT DISPLAYEVAL-CN0216-SDPZSDP BOARD

×