LM1877 is a monolithic dual power amplifier designed to deliver 2W/channel continuous power. It is suitable for stereo phonographs, tape recorders, and AM-FM stereo receivers, etc. LM1877 features low cross-over distortion, low audio band noise, and internal thermal shutdown.
The LM1877 dual audio power amplifier from National Semiconductor is designed for stereo phonographs, tape recorders, AM‑FM receivers, and other multi‑channel audio systems. It operates from a 6 V to 24 V supply and provides features such as low crossover distortion, high PSRR, and internal thermal shutdown.
The datasheet includes 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, along with application examples and a life‑support policy disclaimer.
| Supply Voltage (max) | 26 V |
|---|---|
| Output Power (1 W/channel) | 0.045 % THD |
| Power Bandwidth | 65 kHz |
| Current Limit | 1.0 A |
The LM1877 can be operated with a supply voltage up to 26 V.
At 1 kHz and 20 V supply the typical THD is 0.045 %.
The device has a power bandwidth of 65 kHz.
The LM1877 includes an internal current limit of 1.0 A.