The AD795 is a low noise, precision, FET input operational amplifier. It offers both the low voltage noise and low offset drift of a bipolar input op amp and the very low bias current of a FET-input device.
The AD795 is a low‑power, low‑noise precision FET‑input operational amplifier. It offers a typical input offset voltage of 250 pV, a maximum input bias current of 1 pA, and a supply current of only 1.5 mA, making it suitable for high‑impedance, low‑noise applications such as photodiode preamps and CT scanners.
The device is supplied in an 8‑pin SOIC (RN) package and operates from a supply voltage range of +4 V to +18 V, with an operating temperature range of 0 °C to +70 °C. Detailed electrical characteristics, including noise density, gain, and power‑supply rejection, are provided in the specification tables.
| Supply Current (Quiescent) | 5 mA |
|---|---|
| Input Bias Current | 1 pA max |
| Input Voltage Noise (0.1 Hz‑10 Hz) | 2.5 pV p‑p max |
| Supply Voltage Range | +4 V to +18 V |
The AD795 draws up to 1.5 mA of supply current.
The AD795 has a maximum input bias current of 1 pA.
The input voltage noise is 2.5 pV peak‑to‑peak over that frequency range.
The AD795 is available in an 8‑pin SOIC (RN) package.