Single-Supply, Rail-to-Rail Low Power FET-Input Dual Op Amp

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 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 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 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

The AD822-EP supports defense and aerospace applications (AQEC standard)

* True single-supply operation

* Output swings rail-to-rail

* Input voltage range extends below ground

* Single-supply capability from 5 V to 30 V

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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

* See data sheet for additional features