AD845 is a high-precision, 16 MHz CBFET operational amplifier. It offers a combination of low input offset voltage, low input offset voltage drift, high open-loop gain, high gain bandwidth, fast settling time, which makes it ideal for many applications.
The AD845 is a fast, precise N‑channel JFET‑input operational amplifier offering a 100 V/µs slew rate, 12 MHz unity‑gain bandwidth, and 0.01 % settling in 350 ns while driving 100 pF/500 Ω loads. It is suited for active filters, high‑speed integrators, photodiode preamps, sample‑and‑hold circuits, and buffering A/D and D/A converters.
The datasheet includes detailed electrical specifications, absolute maximum ratings, package options (plastic Mini‑DIP, hermetic CERDIP, 16‑lead SOIC), ordering guide, and typical performance graphs such as settling‑time measurements and instrumentation‑amp examples.
| Slew Rate | 100 V/µs |
|---|---|
| Unity‑Gain Bandwidth (typical) | 12.8 MHz |
| Input Offset Voltage (typ) | 0.25 mV |
| Input Bias Current (typ) | 0.5 nA |
| CMRR (min) | 94 dB |
| Supply Voltage Range | +4.75 V to +18 V |
| Quiescent Current (typ) | 10 mA |
The AD845 can be operated up to +18 V supply voltage.
The typical slew rate is 100 V/µs.
The AD845 is offered in Plastic Mini‑DIP, hermetic CERDIP, and 16‑lead SOIC packages, with tape‑and‑reel options.
The typical input offset voltage is 0.25 mV, with a maximum of 0.7 mV at initial conditions.