The LM108A and LM308A are precision operational amplifiers designed for high‑source‑impedance applications that require low offset, low bias currents and low power dissipation. Their features include guaranteed low input offset current (200 pA), low input bias current (2 nA), and a wide supply voltage range of +2 V to +18 V.
The document provides absolute maximum ratings, electrical characteristics, typical application circuits, and package information for both devices. It also includes typical performance graphs, compensation options, and schematic diagrams to aid designers in implementing these amplifiers in integrators, transducer amplifiers, analog memories, and light‑meter circuits.
| Input Offset Current | 200 pA max |
|---|---|
| Input Bias Current | 2 nA max |
| Supply Voltage Range | +2 V to +18 V |
| Input Offset Voltage | 0.5 mV max |
| Operating Temperature (LM108A) | –55 °C to 125 °C |
| Operating Temperature (LM308A) | 0 °C to 70 °C |
| Supply Current (Typical) | 0.3 mA (LM108A) / 0.6 mA (LM108) |
| CMRR | 100 dB typical |
| PSRR | 96 dB typical |
The devices operate from +2 V up to +18 V.
The maximum input offset current is guaranteed to be 200 pA.
Typical applications include integrators, transducer amplifiers, analog memories, and light meters.
The LM108A can operate from –55 °C to 125 °C.