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AD8237:  Micropower, Zero Drift, True Rail-to-Rail Instrumentation Amplifier

Product Details

Product Status:Recommended for New Designs

The AD8237 is a micropower, zero drift, rail-to-rail input and output instrumentation amplifier. The relative match of two resistors sets any gain from 1 to 1000. The AD8237 has excellent gain accuracy performance that can be preserved at any gain with two ratio-matched resistors.

The AD8237 employs the indirect current feedback architecture to achieve a true rail-to-rail capability. Unlike conventional in-amps, the AD8237 can fully amplify signals with common-mode voltage at or even slightly beyond its supplies. This enables applications with high common-mode voltages to use smaller supplies and save power.

The AD8237 is an excellent choice for portable systems. With a minimum supply voltage of 1.8 V, a 115 μA typical supply current, and wide input range, the AD8237 makes full use of a limited power budget, yet offers bandwidth and drift performance suitable for bench-top systems.

APPLICATIONS

  • Bridge amplification
  • Pressure measurement
  • Medical instrumentation
  • Thermocouple interface
  • Portable systems
  • Current measurement

FEATURES and BENEFITS

  • Gain set with 2 external resistors
    -- Can achieve low gain drift at all gains
  • Ideal for battery powered instruments
    -- Supply current: 115 μA
    -- Rail-to-rail input and output
    -- Zero input crossover distortion
  • Designed for excellent dc performance
    -- Minimum CMRR: 106 dB
    -- Maximum offset voltage drift: 0.3 μV/°C
    -- See data sheet for additional features
  • Bandwidth mode pin (BW) to adjust compensation
  • 8 kV HBM ESD rating
  • RFI filter on-chip
  • Single-supply operation:
    1.8 V to 5.5 V
  • 8-lead MSOP package

Functional Block Diagram for AD8237

Video: AD8237 Micropower, Zero-Drift In-Amp

Award Winning!

EDN Hot 100 Award



AD8237 wins 2012 Hot 100 Award from EDN!

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD8237 SPICE Macro Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

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Price, packaging, availability

AD8237 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8237ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $1.16 $0.93 Y  Material Info Notify Me Purchase Sample
AD8237ARMZ-R7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $0.93 Y  Material Info Notify Me Purchase
AD8237ARMZ-RL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $0.93 Y  Material Info Notify Me 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.

AD8237 and AD8420 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-INAMP-ICF-RMZ Status: Production Evaluation Board for AD8420 and 8237 $34.58 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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