The AD797 is a very low noise, low distortion operational amplifier from Analog Devices, with applications such as professional audio preamplifiers, IR, CCD, and sonar imaging systems, spectrum analyzers, ultrasound preamplifiers, seismic detectors, and Σ-Δ ADC/DAC buffers.
The AD797 operational amplifier offers exceptionally low input noise (0.9 nV/√Hz) and total harmonic distortion of –120 dB, making it suitable for high‑performance audio preamplifiers, ultrasound, IR imaging, and seismic detectors. It operates from +5 V to +15 V supplies and can source up to 50 mA output current.
The datasheet provides detailed specifications, absolute maximum ratings, pin configurations for PDIP and SOIC packages, thermal resistance data, and typical performance graphs. An ordering guide lists the available package options and temperature ranges.
| Gain‑bandwidth product | 110 MHz (G=1000, +15 V) |
|---|---|
| Output drive current | 50 mA |
| Input voltage noise | 0.9 nV/√Hz (typical at 1 kHz) |
The device is specified for +5 V to +15 V power supplies.
It can source up to 50 mA of output current.
The gain‑bandwidth product is 110 MHz for a gain of 1000.