AD820 is a single-supply, rail-to-rail, low power, FET input op amp.
The AD820 is a precision, low power FET input operational amplifier designed for true single-supply operation from 5 V to 36 V or dual supplies from +2.5 V to +18 V. It features rail-to-rail output swing, extending to within 10 mV of each supply rail, and an input voltage range that extends below ground in single-supply mode.
The device offers excellent DC and AC performance, including a maximum input offset voltage of 800 µV, a unity-gain bandwidth of 1.8 MHz, and a slew rate of 3 V/µs. With a minimum output current of 15 mA and the ability to drive capacitive loads up to 350 pF, the AD820 is suitable for battery-powered instrumentation, photodiode preamps, active filters, and medical applications.
| Supply Voltage Range (Single) | 5 V to 36 V |
|---|---|
| Supply Voltage Range (Dual) | +2.5 V to +18 V |
| Unity-Gain Bandwidth | 1.8 MHz |
| Slew Rate | 3 V/µs |
| Input Offset Voltage (Max) | 800 µV |
| Input Bias Current (Max) | 25 pA |
| Quiescent Current | 800 µA |
| Capacitive Load Drive | 350 pF |
| Operating Output Current | 15 mA |
The input voltage range extends below ground in single-supply mode.
The AD820 provides a minimum output current of 15 mA.
The AD820 is available in plastic DIP (PDIP), surface mount (SOIC), and MSOP packages.