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LM4702 Amplifier Circuit Diagram

LM4702 general description:

     The LM4702 is a high fidelity audio power amplifier driver designed for demanding consumer and pro-audio applications. Amplifier output power may be scaled by changing the supply voltage and number of output devices. The LM4702 is capable of delivering in excess of 300 watts per channel single ended into an 8 ohm load in the presence of 10% high line headroom and 20% supply regulation. The LM4702 includes thermal shut down circuitry that activates when the die temperature exceeds 150°C. The LM4702's mute function, when activated, mutes the input drive signal and forces the amplifier output to a quiescent state. The LM4702 is available in 3 grades that span a wide range of applications and performance levels. The LM4702C is targeted at high volume applications. The LM4702B includes a higher voltage rating along – LM4702A (1) (in development): with the tighter specifications. The LM4702A(1) (in ±20V to ±100V development) is the premium part with the highest voltage rating, fully specified with limits over voltage – LM4702B: ±20V to ±100V and temperature, and is offered in a military 883 – LM4702C: ±20V to ±75V compliant TO-3 package.

LM4702 features:

  • Very High Voltage Operation
  • Scalable Output Power
  • Minimum External Components
  • External Compensation
  • Thermal Shutdown and Mute

LM4702 applications:

  • AV Receivers
  • Audiophile Power Amps
  • Pro Audio
  • High Voltage Industrial Applications

LM4702 circuit diagram:

Typical Audio Amplifier Application Circuit

LM4702 layout and pcb:

LM4702 layout


LM4702 bottom pcb
LM4702 top pcb


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LM4702 Audio Power Amplifier Datasheet - Download


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