AD8421 - Low Power Instrumentation Amplifier

The AD8421 is a low cost, low power, extremely low noise, ultralow bias current, high speed instrumentation amplifier that is ideally suited for a broad spectrum of signal conditioning and data acquisition applications.

• Low power 2.3 mA maximum supply current Low noise 3.2 nV/√Hz maximum input voltage noise at 1 kHz 200 fA/√Hz current noise at 1 kHz Excellent ac specifications 10 MHz bandwidth (G = 1) 2 MHz bandwidth (G = 100) 0.6 µs settling time to 0.001% (G = 10) 80 dB CMRR at 20 kHz (G = 1) 35 V/µs slew rate High precision dc performance (AD8421BRZ) 94 dB CMRR minimum (G = 1) 0.2 µV/°C maximum input offset voltage drift 1 ppm/°C maximum gain drift (G = 1) 500 pA maximum input bias current Inputs protected t.