GENERAL 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.

FEATURES
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
  Maximum gain error: 0.005% (all gains)
  Maximum gain drift: 0.5 ppm/°C (all gains)
  Input bias current: 1 nA guaranteed to 125°C
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

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