AD8237ARMZ-R7 DESCRIPTION
The AD8237 is a micropower, zero drift, rail-to-rail input andoutput instrumentation amplifier. The relative match of tworesistors sets any gain from 1 to 1000. The AD8237 has excellentgain accuracy performance that can be preserved at any gainwith two ratio-matched resistors.The AD8237 employs the indirect current feedback architecture toachieve a true rail-to-rail capability. Unlike conventional in-amps,the AD8237 can fully amplify signals with common-mode voltageat or even slightly beyond its supplies. This enables applicationswith high common-mode voltages to use smaller supplies andsave power.
AD8237ARMZ-R7 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
AD8237ARMZ-R7 APPLICATIONS
Bridge amplification
Pressure measurement
Medical instrumentation
Thermocouple interface
Portable systems
Current measurement
