LM1875T

LM1875T is a monolithic power amplifier offering very low distortion and high-quality performance for consumer audio applications. The device delivers 20 watts into 4Ω or 8Ω loads with a +25V supply. With an 8Ω load and a +30V supply, output power exceeds 30 watts. The amplifier is designed to operate with a minimal number of external components. Overload protection includes internal current limiting and thermal shutdown. The LM1875T leverages advanced circuit techniques and processes to achieve very low distortion even at high output power levels. Additional key features include high gain, high slew rate, wide power bandwidth, large output voltage swing, high current capability, and a very wide supply voltage range. The amplifier is internally compensated and remains stable at gains of 10 or higher.

Applications

• High-performance audio systems
• Bridge amplifiers
• Stereo phonographs
• Servo amplifiers
• Instrumentation systems

Key features

• Output power up to 30W
• Typical open-loop voltage gain: 90 dB
• Low distortion: 0.015%, 1kHz, 20W
• Wide power bandwidth: 70kHz
• Protection against AC and DC short circuits to ground
• Thermal shutdown protection with parasitic circuit
• High current capability: 4A
• Wide supply voltage range: 16V–60V
• Internal output protection diodes
• 94 dB ripple rejection