The OP297 is the first dual op amp to pack precision performance into the space-saving, industry-standard 8-lead SOIC package. It features low offset voltage, low offset voltage drift, very low bias current, very high open-loop gain, low supply current, and operates from ±2 V to ±20 V supplies.
The OP297 dual operational amplifier offers extremely low offset voltage (as low as 50 pV) and bias current (100 pA), making it suitable for high‑precision applications such as strain‑gage amplifiers, thermocouple interfaces, instrumentation amplifiers, and photodiode pre‑amplifiers. It operates from a wide supply range of +2 V to +20 V and provides high open‑loop gain and common‑mode rejection.
The datasheet provides full electrical characteristics, absolute maximum ratings, thermal resistance data, ESD precautions, and typical performance graphs. Key parameters such as input offset voltage, supply current, and common‑mode rejection are listed with typical and maximum values for the OP297E/F/G variants.
| Supply Voltage Operating Range | +2 V to +20 V |
|---|---|
| Supply Current per Amplifier (no load) | 625 pA max |
| Input Offset Voltage (typical) | 50 µV |
| Input Bias Current | 100 pA max at 25 °C |
| Common‑Mode Rejection Ratio | 120 dB minimum |
The OP297 can operate from +2 V up to +20 V.
The typical input offset voltage is 50 µV.
Each amplifier draws up to 625 pA of supply current with no load.
The device provides a common‑mode rejection ratio of at least 120 dB.