The LM1877 is a dual audio power amplifier designed by National Semiconductor. It can deliver 2W/channel continuous power into 8Ω loads. It has a wide supply range of 6V-24V and features low distortion, low noise, and high precision. It is suitable for use in multi-channel audio systems, tape recorders, and AM-FM stereo receivers.
The LM1877 dual audio power amplifier is designed for low component count while supporting stereo phonographs, tape recorders, AM‑FM receivers, and other audio applications. It features a wide supply range of 6 V to 24 V, low crossover distortion, and internal thermal shutdown.
The document provides absolute maximum ratings, electrical characteristics, typical performance curves, and physical dimensions for both the dual‑in‑line (N‑package) and surface‑mount (M‑package) versions. It also includes application examples such as stereo phonograph amplifiers and tone‑control circuits.
| Supply Voltage (max) | 26 V |
|---|---|
| Total Harmonic Distortion (500 mW/channel) | 0.045 % |
| Power Supply Rejection Ratio | 65 dB |
The LM1877 operates from a wide supply range of 6 V to 24 V.