AD8237ARMZ-RL

AD8237ARMZ-RL is a micropower, zero drift, true rail-to-rail instrumentation amplifier. The relative match of two resistors sets any gain from 1 to 1000. It has excellent gain accuracy performance that can be preserved at any gain with two ratio-matched resistors. This device 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. This device is an excellent choice for portable systems. It is used in applications such as bridge amplification, pressure measurement, medical instrumentation, thermocouple interface, portable systems, and current measurement.

• Gain set with 2 external resistors can achieve low gain drift at all gains
• Rail-to-rail input and output, zero input crossover distortion
• Bandwidth mode pin (BW) to adjust compensation, 8kV HBM ESD rating, RFI filter on-chip
• Single-supply operation from 1.8V to 5.5V, spectral density is 68nV/√Hz typ at (f = 1KHz)
• Input bias current is 250pA typical at (+VS = +5V, -VS = 0V, VREF = 2.5V, VCM = 2.5V, TA = 25°C)
• 200KHz typ small signal bandwidth at (G = 1, +VS = +5V, -VS = 0V, VREF = 2.5V, VCM = 2.5V)
• Slew rate is 0.05V/µs typical at (low bandwidth mode, +VS = +5V, -VS = 0V, VREF = 2.5V)
• Operating voltage range from 1.8V to 5.5V, quiescent current is 115µA typical at (TA = 25°C)
• Input offset current (average temperature coefficient) is 0.5pA/°C typical at (TA = 25°C)
• Operating temperature range from -40°C to +125°C, 8-lead MSOP package

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