The OP285 is a dual-channel high precision operational amplifier from Analog Devices. It features low noise, high speed and high accuracy, making it suitable for use in high-performance measurement systems.
The OP285 is a dual 9 MHz precision operational amplifier featuring a Butler Amplifier front‑end that combines bipolar accuracy with JFET speed. It offers ultra‑low offset voltage (250 pV), low noise (6 nV/√Hz), high slew rate (22 V/µs) and low supply current (5 mA) in an 8‑pin SOIC or DIP package.
The datasheet provides full electrical specifications, absolute maximum ratings, pin configurations, ordering guide, and application notes such as short‑circuit protection, overload recovery, and high‑speed settling performance for audio, active filters, and A/D converter driving.
| Offset Voltage | 250 pV |
|---|---|
| Input Bias Current | 350 nA |
| Input Offset Current | 2 nA |
| Gain‑Bandwidth Product | 9 MHz |
| Power Supply Rejection Ratio | 111 dB |
| Supply Current | 5 mA |
The OP285 draws about 5 mA of supply current.
The gain‑bandwidth product is specified as 9 MHz.