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AD22057:  Single Supply Sensor Interface Amplifier

Product Details

The AD22057 is a single-supply difference amplifier for the amplification and low-pass filtering of small differential voltages from sources having a large common-mode voltage.

Supply voltages from +3 V to +36 V can be used. The input common-mode range extends from below ground to 24 V using a +5 V supply with excellent rejection of this common-mode voltage.

This range is achieved by the use of a special resitive attenuator at the input, laser trimmed to a very high differential balance. Low initial offset voltage and offset voltage drift are specified, and long-term stability of gain and offset voltage is also provided.

Provisions are included for optional low-pass filtering and gain adjustment. An accurate midscale offset feature allows bipolar signals to be amplified.


  • Gain of ×20 Alterable from ×1 to ×160
  • Input CMR from Below Ground to 6× (VS - 1 V)
  • Output Span 20 mV to (VS - 0.2) V
  • 1-, 2-, 3-Pole Low-Pass Filtering Available
  • Accurate Midscale Offset Capability
  • Differential Input Resistance 400 kΩ
  • Drives 1kΩ Load to +4 V Using VS = +5 V
  • Supply Voltage: +3.0 V to +36 V
  • Transient Spike Protection and RFI
    Filters Included
  • Peak Input Voltage (40 ms): 60 V
  • Reversed Supply Protection: -34 V
  • Operating Temperature Range: -40°C
    to +125°C

Functional Block Diagram for AD22057


Title Content Type File Type
AD22057: Single-Supply Sensor Interface Amplifier Data Sheet (Rev A, 04/1999) (pdf, 192 kB) Data Sheets PDF
AN-669: Effectively Applying the AD628 Precision Gain Block  (pdf, 193 kB) Application Notes PDF
A Designer's Guide to Instrumentation Amplifiers (3rd Edition) Design Handbooks HTML
Auto-Zero Amplifiers  (doc, 75 kB)
A wide variety of electronic applications, especially those involving very small input signals, require signal paths with very low offset voltage and offset voltage drift over time and temperature.
Technical Articles DOC
Current Measurement in Solenoids for Automotive Control Systems  (pdf)
by Scott Beversdorf and Charles Whiting, Analog Devices, Inc. (Analog Dialogue 38-04, April 2004)
Technical Articles PDF
High-performance Adder Uses Instrumentation Amplifiers
Make an adder circuit using instrumentation amplifiers to increase input impedance.
(EDN, 9/3/2009)
Technical Articles HTML
Applying Instrumentation Amplifiers Effectively: The Importance of an Input Ground Return  (pdf, 508 kB) Technical Documentation PDF
Leading Inside Advertorials: Applying Instrumentation Amplifiers Effectively–The Importance of an Input Ground Return  (pdf, 121 kB) Overview PDF
Power System Management (Spring 2007)  (pdf, 1170 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD22057 SPICE Macro-Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

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.

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Price, packaging, availability

AD22057 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD22057R Status: Production 8 ld SOIC 8 Ind Tube, 98 $7.55 $5.33 N  Material Info PCN Purchase
AD22057R-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 $7.55 $5.33 N  Material Info PCN Purchase
AD22057RZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $6.69 $4.71 Y  Material Info PCN Purchase
AD22057RZ-RL Status: Production 8 ld SOIC 8 Ind Reel, 2500 $6.69 $4.71 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.

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