Analog Devices AD8420 Instrumentation Amplifier

Analog Devices announced their AD8420 micropower, wide-supply-range instrumentation amplifier. The ADI AD8420 amp features a high CMRR (common-mode rejection ratio) of 100 dB, 75 uA of power consumption, wide 2.7 V to 36 V single and +/-18 V dual-power supply range. The AD8420 instrumentation amplifier (8-lead MSOP) is available now for $0.89 (price each per 1000). It is ideal for portable and battery-powered precision signal healthcare and instrumentation applications such as infusion pumps, remote and handheld metering equipment and smart phones.

Analog Devices (ADI) AD8420 micropower, wide-supply-range instrumentation amplifier

AD8420 Instrumentation Amplifier Features

  • CMRR (common-mode rejection ratio) of 100 dB
  • Consumes only 75 µA of power
  • Gain set with 2 external resistors
  • Gain range: 1 to 1000
  • Input voltage goes below ground
  • Very wide power supply range
  • Single supply: 2.7V to 36V
  • Dual supply: +/-2.7V to +/-18V
  • Bandwidth (G=100): 2.5 kHz
  • Input noise: 50 nV/√Hz
  • Max supply current: 90 µA
  • Max offset voltage: 200 µV
  • Max differential input voltage: 1V
  • Min CMRR: 100 dB
  • MSOP-8 package
  • 200 uV of input offset and 1 µV/°C of offset drift

More info: Analog Devices AD8420 Instrumentation Amplifier (pdf)