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

Product Status:Recommended for New Designs

AD8237 Data Sheet Rev 0, 08/2012 (pdf 284kB)

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Product Status:Recommended for New Designs

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Model	Package	Price* (100-499)	Price* 1000 pcs
AD8237ARMZ Status: Production	8 ld MSOP	$1.16	$0.93
AD8237ARMZ-R7 Status: Production	8 ld MSOP	-	$0.93
AD8237ARMZ-RL Status: Production	8 ld MSOP	-	$0.93

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

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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

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Documentation

Title	Content Type	File Type
AD8237: Micropower, Zero Drift, True Rail-to-Rail Instrumentation Amplifier Datasheet (Rev 0, 08/2012) (pdf, 284 kB)	Data Sheets	PDF
AD8237 Micropower, Zero-Drift Instrumentation Amplifier Applying the AD8237 Micropower, Zero-drift instrumentation amplifier to improve overall system performance, simplify design and reduce power/cost.	Videos	HTML
UG-513: Evaluating the AD8237 Micropower, Zero Drift, True Rail-to-Rail Instrumentation Amplifier and the AD8420 Wide Supply Range, Micropower, Rail-to-Rail Instrumentation Amplifier (pdf, 221 kB)	User Guides	PDF
Instrumentation Amplifier Combines Power Efficiency, Zero-Drift Accuracy and Value for Portable Medical, Instrumentation and Consumer Devices (14 Aug 2012)	Press Releases	HTML
Glossary of EE Terms	Glossary	HTML

Design Tools,Models,Drivers & Software

Title	Content Type	File Type
AD8237 SPICE Macro Model AD8237 PICE Macro Model, Rev. 1.0, 8/2012	SPICE Models	HTML

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AD8237 Model Options

Print Table

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

Print Table

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