AD8237ARMZ

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. Typical application includes bridge amplification, pressure measurement, medical instrumentation, thermocouple interface and portable systems and current measurement.

• Gain set with 2 external resistors: can achieve low gain drift at all gains
• Ideal for battery powered instruments
• Supply current of 115µA, rail- to-rail input and output and zero input crossover distortion
• Designed for excellent DC performance: minimum 106dB CMRR
• 0.5ppm/°C max gain drift, max gain error is 0.005% (all gains), 0.3µV/°C max offset voltage drift
• Input bias current of 1nA guaranteed to 125°C
• Bandwidth mode pin (BW) to adjust compensation, 8KV HBM ESD rating and RFI filter on -chip
• Single supply operation range from 1.8V to 5.5V
• 8 lead MSOP package
• Operating temperature range from -40°C to 125°C

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