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AD8657:  18V, 22µA, 45nV/√Hz, Precision RRIO, Dual Op Amp

Product Status:Recommended for New Designs
Data
Sheet
AD8657 Data Sheet Rev B, 08/2012 (pdf 711kB)

Product Details

Product Status:Recommended for New Designs
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The AD8657/AD8659 are dual and quad micropower, precision, rail-to-rail input/output amplifiers optimized for low power and wide operating supply voltage range applications.

The AD8657/AD8659 operates from 2.7 V to 18 V with a typical quiescent supply current of 18 μA. The devices use the Analog Devices, Inc., patented DigiTrim® trimming technique, which achieves low offset voltage. The AD8657/AD8659 also have high immunity to electromagnetic interference.

The combination of low supply current, low offset voltage, very low input bias current, wide supply range, and rail-to-rail input and output make the AD8657/AD8659 ideal for current monitoring in process and motor control applications. The combination of precision specifications makes these devices ideal for dc gain and buffering of sensor front ends or high impedance input sources in wireless or remote sensors or transmitter.

The AD8657/AD8659 is specified over the extended industrial temperature range (−40°C to +125°C). The AD8657 is available in an 8-lead MSOP package and an 8-lead LFCSP package; the AD8659 is available in a 14-lead SOIC package and 16-lead LFCSP package.

APPLICATIONS

  • Portable operating systems
  • Current monitors
  • 4 mA to 20 mA loop drivers
  • Buffer/level shifting
  • Multipole filters
  • Remote/wireless sensors
  • Low power transimpedance amplifiers

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FEATURES and BENEFITS

  • Micropower at high voltage (18 V):
    22 μA maximum
  • Low offset voltage:
    350 µV maximum
  • Low input bias current:
    20 pA maximum
  • Gain bandwidth product:
    230 kHz at AV = 100 typical
  • Unity-gain crossover: 230 kHz
  • −3 dB closed-loop bandwidth:
      305 kHz
  • Single-supply operation:
    2.7 V to 18 V
  • Dual-supply operation:
    ±1.35 V to ±9 V
  • Unity-gain stable
  • Excellent electromagnetic interference immunity

Pin Configuration for AD8657

AD8657 Diagram

Similar Products

AD8603, AD8607, AD8609: available in single, dual, and quad channel versions operating at 5V offering lower offset, input bias current, and voltage noise with higher bandwidth, slew rate, and output drive.

Find Similar Products
By Operating Parameters

Documentation

Title Content Type File Type
AD8657/AD8659: 22 µA, RRIO, CMOS,18 V Operational Amplifiers Data Sheet (Rev B, 08/2012) (pdf, 711 kB) Data Sheets PDF
CN-0181: Precision, 16-Bit, Voltage Level Setting with Less than 5 mW Total Power Dissipation  (pdf, 175 kB) Circuit Note PDF
CN-0179: Less Than 200 μA, Low Power, 4 mA-to-20 mA, Process Control Current Loop  (pdf, 156 kB) Circuit Note PDF
Op Amp Applications Handbook Design Handbooks HTML
MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps  (pdf, 66 kB) Tutorials PDF
MT-047: Op Amp Noise  (pdf, 72 kB) Tutorials PDF
MS-2212: The Maximum Supply Current That Wasn't  (pdf, 241 kB) Technical Articles PDF
Amplifiers for Signal Conditioning - Section 3  (PDF, 397 kB)
By Walt Kester, James Bryant, Walt Jung 		Technical Articles PDF
Avoiding Op-Amp Instability Problems In Single-Supply Applications
(Analog Dialogue, Vol. 35, No. 2, March-May, 2001) 		Analog Dialogue HTML
Amplifier ICs Solutions Bulletins HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADIsimOpAmp™
This tool will help with the selection, evaluation and troubleshooting of voltage feedback Op-Amps. It uses typical data to model the behavior of a selected amplifier. It allows a user to select an amplifier, configure a circuit, apply a signal and evaluate the performance. It is useful for checking an amplifier's spec's such as Bandwidth, Slew Rate, Input/Output Range, Gain Error, Load Current, Stability Issues and DC Errors in a given circuit. 		ADIsim Design/Simulation Tools HTML
Analog Bridge Wizard ADIsim Design/Simulation Tools HTML
AD8657 SPICE Macro-Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Engineered. Tested. Ready to Integrate.
Learn More
Updated 03/2011
Circuit Note PDF

CN0181:Precision, 16-Bit, Voltage Level Setting with Less than 5 mW Total Power Dissipation

Benefits & Features
  • True 16 bit voltage output DAC w/buffer
  • Small footprint saves board space and lowers cost
  • Low power consumption
Products Used

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Available Design Resources

CN0181:Precision, 16-Bit, Voltage Level Setting with Less than 5 mW Total Power Dissipation
Updated 12/2010
Circuit Note PDF

CN0179:Less Than 200 μA, Low Power, 4 mA-to-20 mA, Process Control Current Loop

Benefits & Features
  • Low power 4-20 mA current loop
  • 12-, 14-, or 16-bit digital control
  • Use in programmable logic controllers
Products Used

Add to Signal Chain Designer Explore in Signal Chain Designer

Available Design Resources

CN0179:Less Than 200 μA, Low Power, 4 mA-to-20 mA, Process Control Current Loop

SampleSample & Buy

Price, packaging, availability

AD8657 Model Options
Model Package Pins Temp.
Range 		Packing,
Qty 		Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8657ACPZ-R7 Status: Production 8 ld LFCSP (3x3mm w/1.7x2.4 EP) 8 Ind Reel, 1500 - $0.95 Y  Material Info PCN Purchase Sample
AD8657ACPZ-RL Status: Production 8 ld LFCSP (3x3mm w/1.7x2.4 EP) 8 Ind Reel, 5000 - $0.95 Y  Material Info PCN Purchase
AD8657ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $1.15 $0.95 Y  Material Info PCN Purchase Sample
AD8657ARMZ-R7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $0.95 Y  Material Info PCN Purchase
AD8657ARMZ-RL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

PRAOPAMP Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-PRAOPAMP-1KSZ Status: Production Single 5 Lead SC70 (KS-5) Eval Board $20.19 Yes -
EVAL-PRAOPAMP-1RJZ Status: Production Single 5-Lead SOT 23 (RJ-5) Eval Board $20.19 Yes -
EVAL-PRAOPAMP-1RMZ Status: Production Single 8 Lead MSOP (RM-8) Eval Board $20.19 Yes -
EVAL-PRAOPAMP-1RZ Status: Production Single 8-Lead SOIC (R-8) Eval Board $20.19 Yes -
EVAL-PRAOPAMP-2RMZ Status: Production Dual 8-Lead MSOP (RM-8) Eval Board $20.19 Yes -
EVAL-PRAOPAMP-2RZ Status: Production Dual 8-Lead SOIC (R-8) Eval Board $20.19 Yes -
EVAL-PRAOPAMP-4RUZ Status: Production Quad 14-Lead TSSOP (RU-14) $20.19 Yes -
EVAL-PRAOPAMP-4RZ Status: Production Quad 14-Lead SOIC (R-14) $20.19 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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