AD8421BRMZ Description

The AD8421BRMZ is a low-cost, low-power, ultralow bias current, high-speed instrumentation amplifier that is well-suited for a wide range of signal conditioning and data collecting applications.

AD8421BRMZ Features

• High precision dc performance (AD8421BRZ)

-94 dB CMRR minimum (G = 1)

-2 μV/°C maximum input offset voltage drift

-1 ppm/°C maximum gain drift (G = 1)

• 500 pA maximum input bias current

• Inputs protected to 40 V from opposite supply

±2.5 V to ±18 V dual supply (5 V to 36 V single supply)

• 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 

AD8421BRMZ Applications

• Multiplexed input applications

• ADC driver

• Medical instrumentation

• Precision data acquisition

• Microphone preamplification

• Vibration analysis