Analog Devices Inc. AD822 Low power FET Input Op-Amps

Analog Devices Inc. AD822 Op-Amps are dual precision single supply low power FET input amplifiers. These amplifiers offer true single-supply capability with an input voltage range extending below the negative rail. This allows the AD822 to accommodate input signals below ground in the single-supply mode. The AD822 op-amps can operate from a single supply of 5V to 30V or dual supplies of ±2.5V to ±15V. The output voltage swing of these Analog Devices amplifiers extends to within 10mV of each rail, providing the maximum output dynamic range.

The AD822 amplifiers provide excellent AC performance for low power, good DC performance, low noise, and high-load drive. These op-amps support defense and aerospace applications (AQEC standard) with a -55°C to +125°C military temperature range. Typical applications include medical instrumentation, battery-powered precision instrumentation, photodiode preamps, active filters, and 12-bit to 14-bit data acquisition systems. 

Features

  • True single-supply operation
    • Input voltage range extends below ground
    • Output swings rail-to-rail
    • 5V to 30V single-supply capability 
    • ±2.5V to ±15V dual-supply capability 
  • High load drive
    • 350pF, G = +1 capacitive load drive
    • 15mA minimum output current 
  • Excellent AC performance for low power
    • 800μA maximum quiescent current per amplifier
    • 1.8MHz unity-gain bandwidth
    • 3V/μs slew rate 
  • Low noise
    • 13nV/√Hz @ 10kHz
    • No phase inversion
  • Good dc performance
    • 800μV maximum input offset voltage
    • 2μV/°C typical offset voltage drift 
    • 25pA maximum input bias current
  • Supports defense and aerospace applications (AQEC standard)
    • -55°C to +125°C military temperature range 
    • Controlled manufacturing baseline
    • One assembly/test site
    • One fabrication site
    • Enhanced product change notification
    • Qualification data available on request
    • V62/12636 DSCC drawing number 

Applications

  • Battery-powered precision instrumentation
  • Photodiode preamps
  • Active filters
  • 12-bit to 14-bit data acquisition systems
  • Medical instrumentation
  • Low power references and regulators

Connection Diagram

Application Circuit Diagram - Analog Devices Inc. AD822 Low power FET Input Op-Amps
Published: 2018-12-13 | Updated: 2023-02-14