Analog Devices Inc. ADA4638-1 30V Precision Amplifier

Analog Devices Inc. ADA4638-1 30V Precision Amplifier features a rail-to-rail output swing and is guaranteed to operate from 4.5V to 30V single supply or ±2.25V to ±15V dual supplies while consuming less than 0.95mA of supply current at ±5V. With an offset voltage of 4μV, offset drift less than 0.05 μV/°C, no 1/f noise, and input voltage noise of only 1.2μV p-p (0.1Hz to 10Hz), ADI ADA4638-1 is suited for high precision applications where large error sources cannot be tolerated.

Pressure sensors, medical equipment, and strain gage amplifiers benefit greatly from nearly zero drift over the wide operating temperature range. Many applications can take advantage of the rail-to-rail output swing provided by the ADA4638-1 to maximize the signal-to-noise ratio (SNR). ADA4638-1 is specified for the extended industrial (−40°C to +125°C) temperature range.


  • 4.5V to 30V Single supply operation
  • ±2.25V to ±15V Dual supply operation
  • 4μV Maximum low offset voltage
  • 0.05μV/°C Maximum input offset voltage drift
  • 130dB Minimum high gain
  • 120dB Minimum high PSRR
  • 130dB Minimum high CMRR
  • Input common-mode range includes lower supply rail
  • Rail-to-rail output
  • 0.95mA Maximum low supply current


  • Electronic weight scale
  • Pressure and position sensors
  • Strain gage amplifiers
  • Medical instrumentation
  • Thermocouple amplifiers

Pin Configuration

Analog Devices Inc. ADA4638-1 30V Precision Amplifier
Published: 2013-04-26 | Updated: 2022-03-11