The document describes the features and characteristics of Analog Devices' REV. A product, including low noise, high precision, low distortion, high slew rate, etc., suitable for building high-speed instrumentation systems and other applications.
The OP285 is a high‑speed, precision dual operational amplifier that combines the low‑noise performance of bipolar transistors with the speed of JFETs. It offers a typical offset voltage of 250 µV, a slew rate of 22 V/µs, and a gain‑bandwidth product of 9 MHz while consuming only about 5 mA supply current. The device is supplied in 8‑pin plastic DIP and SO‑8 surface‑mount packages and operates over an extended industrial temperature range (‑40 °C to +85 °C).
The datasheet includes detailed specifications, pin‑out diagrams, absolute maximum ratings, ordering information, and application notes such as short‑circuit protection, input over‑current protection, and fast settling performance for high‑speed A/D converter driving.
| Offset Voltage (Vos) – Typical | 250 µV |
|---|---|
| Input Bias Current (Ib) | 350 nA (typical) |
| Slew Rate | 22 V/µs |
| Gain‑Bandwidth Product | 9 MHz |
| Power Supply Rejection Ratio (PSRR) | 85 dB (typical at +4.5 V) |
| Input Voltage Range | ±10.5 V |
| Output Voltage Swing (RL = 2 kΩ) | -13.5 V to +13.9 V |
The OP285 has a typical slew rate of 22 V/µs.
The gain‑bandwidth product is 9 MHz.