AD8237 Series

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

Catalog

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

Part	Supplier Device Package	Current - Supply	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply Span (Min) [Min]	Output Type	Voltage - Input Offset	Package / Case	Package / Case [custom]	Package / Case	Slew Rate	Current - Output / Channel	Number of Circuits	Amplifier Type	Mounting Type	-3db Bandwidth	Current - Input Bias	Voltage - Supply Span (Max) [Max]
Analog Devices AD8237ARMZ-RL	8-MSOP	115 µA	125 °C	-40 °C	1.8 V	Rail-to-Rail	25 çV	8-MSOP 8-TSSOP	0.118 in	3 mm	0.15 V/µs	4 mA	1	Instrumentation	Surface Mount	200 kHz	250 pA	5.5 V
Analog Devices AD8237ARMZ-R7	8-MSOP	115 µA	125 °C	-40 °C	1.8 V	Rail-to-Rail	25 çV	8-MSOP 8-TSSOP	0.118 in	3 mm	0.15 V/µs	4 mA	1	Instrumentation	Surface Mount	200 kHz	250 pA	5.5 V

Catalog

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

Key Features

• Gain set with 2 external resistorsCan achieve low gain drift at all gains

• Ideal for battery powered instrumentsSupply current: 115 μARail-to-rail input and outputZero input crossover distortion

• Designed for excellent dc performanceMinimum CMRR: 106 dBMaximum offset voltage drift:0.3 μV/°CSee 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

Description

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.ApplicationsBridge amplificationPressure measurementMedical instrumentationThermocouple interfacePortable systemsCurrent measurement