AD822ARZ

The AD822 is a dual precision, low power FET input op amp that can operate from a single supply of 5 V to 30 V or from dual supplies of ±2.5 V to ±15 V. 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 10 mV of each rail, providing the maximum output dynamic range. Offset voltage of 800 μV maximum, offset voltage drift of 2 μV/°C, input bias currents below 25 pA, and low input voltage noise provide dc precision with source impedances up to a gigaohm. The 1.8 MHz unity-gain bandwidth, -93 dB total harmonic distortion (THD) at 10 kHz, and 3 V/μs slew rate are provided with a low supply current of 800 μA 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 30 V
• Dual-supply capability from ±2.5 V to ±15 V
• High load drive
• Capacitive load drive of 350 pF, G = +1
• Minimum output current of 15 mA
• Excellent ac performance for low power
• 800 μA maximum quiescent current per amplifier
• Unity-gain bandwidth: 1.8 MHz
• Slew rate of 3 V/μs
• Good dc performance
• 800 μV maximum input offset voltage
• 2 μV/°C typical offset voltage drift
• 25 pA maximum input bias current
• Low noise
• 13 nV/√Hz at 10 kHz
• No phase inversion