20W Audio Power Amplifier LM1875

The LM1875 is a monolithic audio power amplifier offering very low distortion and high quality performance for consumer audio applications.

Up to 30 watts output power
AVO typically 90 dB
Low distortion: 0.015%, 1 kHz, 20 W
Wide power bandwidth: 70 kHz
Protection for AC and DC short circuits to ground
Thermal protection with parole circuit
High current capability: 4A
Wide supply range 16V-60V
Internal output protection diodes
94 dB ripple rejection
Plastic power package TO-220

20W Audio Power Amplifier LM1875 1

The LM1875 delivers 20 watts into a 4 or 8 load on ±25V supplies. Using an 8 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.

20W Audio Power Amplifier LM1875 2

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. The amplifier is internally compensated and stable for gains of 10 or greater.