Datasheet
The LM1875 is a 20W audio power amplifier produced by National Semiconductor. It is suitable for consumer electronics products such as high-fidelity audio and power amplifiers. The product adopts a monolithic design, with large output power, low distortion, wide bandwidth, large output voltage swing, high current capacity, and wide supply range.
User Manual
The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. The LM1875 delivers 20 watts into a 4Ω or 8Ω load on ±25V supplies. Using an 8Ω load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown. The LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range.
