This document introduces the features and characteristics of OP1177/OP2177/OP4177 precision low noise, low input bias current operational amplifiers
The OPx177 family (OP1177, OP2177, OP4177) are high‑precision, low‑noise, low‑bias‑current operational amplifiers available in MSOP, SOIC, and TSSOP surface‑mount packages. They offer offset voltages as low as 60 pV, input bias currents of 2 nA, and supply currents under 500 µA per amplifier, making them suitable for demanding sensor and instrumentation applications.
The document lists electrical characteristics, absolute maximum ratings, thermal resistance, and typical performance graphs, and includes an ordering guide with part numbers for each package option. Applications include wireless base‑station control, optical network control, precision sensor conditioning, and precision filtering.
| Offset Voltage (typical) | 60 pV |
|---|---|
| Input Bias Current (max) | 2 nA |
| Voltage Noise Density (typical) | 8.5 nV/√Hz |
| Supply Current per Amplifier (typical) | 400 µA |
| Gain‑Bandwidth Product | 1.3 MHz |
| Operating Temperature Range | -40 °C to +125 °C |
The OP1177 has a typical offset voltage of 60 pV.
The maximum input bias current is 2 nA per amplifier.
They operate from a dual supply of +2.5 V to +15 V.
The gain‑bandwidth product is 1.3 MHz.