LM1875 20W Audio Power Amplifier
General Description
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. The amplifier is internally compensated and stable for gains
of 10 or greater.
Features
♦ 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
Absolute Maximum Ratings (Note 1)
| Supply Voltage | 60V |
| Input Voltage | −VEE to VCC |
| Storage Temperature | −65˚C to + 150˚C |
| Junction Temperature | 150˚C |
| Lead Temperature | 260˚C |
