LM1875 power amplifier

LM1875 power amplifier

650.00

The LM1875 is a high-performance audio power amplifier IC designed for audio applications requiring moderate power output and excellent sound quality. Manufactured by Texas Instruments, this IC operates as a monolithic power amplifier capable of delivering up to 20 watts of output power into an 8-ohm load with low distortion. The LM1875 is designed to be used in audio amplification systems for hi-fi stereo amplifiers, home theater systems, and other audio equipment where reliable and high-quality sound reproduction is critical.

Key Features:

  • Power Output: Up to 20 watts into an 8-ohm load at ±25V supply voltage
  • Low Total Harmonic Distortion (THD): 0.015% (typical) at 1 kHz, 20 watts
  • Wide Supply Voltage Range: ±16V to ±60V
  • High Signal-to-Noise Ratio (SNR): 95 dB (typical)
  • Short Circuit Protection: Ensures robustness against load faults
  • Thermal Shutdown Protection: Protects against overheating
  • External Components: Minimal external components required for operation
  • Package Type: TO-220-11 (single in-line package)

Technical Specifications:

  • Output Power: Up to 20W into 8 ohms, 30W into 4 ohms (with proper heat sinking)
  • Supply Voltage Range: ±16V to ±60V (recommended ±25V)
  • Input Impedance: 150 kΩ (typical)
  • Frequency Response: 10 Hz to 100 kHz (-3 dB)
  • Total Harmonic Distortion + Noise (THD+N): 0.015% at 1 kHz, 20W into 8 ohms
  • Slew Rate: 4V/µs (typical)
  • Operating Temperature Range: 0°C to +70°C

Applications:

  • Audio Amplifiers: Hi-fi stereo amplifiers, home theater systems, and PA systems.
  • Active Speakers: Powered speakers and studio monitors.
  • Instrumentation: Test and measurement equipment requiring audio amplification.
  • Consumer Electronics: Audio equipment for home and professional use.
  • DIY Audio Projects: Custom audio amplifier designs and hobbyist projects.

Datasheet:
For detailed technical information, refer to the LM1875 Audio Power Amplifier Datasheet.

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