AD822ANZ

The AD822 is a dual precision, low power FET input op amp that can operate from a single supply of 5V to 30V or from dual supplies of ±2.5V to ±15V. It has true single- supply capability with an input voltage range extending below the negative rail, allowing the AD822 to accommodate input signals below ground while in the single- supply mode. Output voltage swing extends to within 10mV of each rail, providing the maximum output dynamic range. Offset voltage of 800μV maximum, offset voltage drift of 2μV/°C, input bias currents below 25pA, and low input voltage noise provide dc precision with source impedances up to a gigaohm. The 1.8MHz unity- gain bandwidth, - 93dB total harmonic distortion (THD) at 10kHz, and 3V/μs slew rate are provided with a low supply current of 800μA per amplifier.

Applications

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

Key features

• True single- supply operation
• Output swings rail- to- rail
• Input voltage range extends below ground
• Single- supply capability from 5 V to 30V
• Dual- supply capability from ±2.5V to ±15V
• High load drive
• Capacitive load drive of 350 pF, G = +1
• Minimum output current of 15 mA
• Excellent ac performance for low power
• 800μA maximum quiescent current per amplifier
• Unity- gain bandwidth:1.8 MHz
• Slew rate of 3V/μs
• Good dc performance
• 800μV maximum input offset voltage
• 2μV/°C typical offset voltage drift
• 25 pA maximum input bias current
• Low noise
• 13nV/√Hz at 10kHz
• No phase inversion