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TDA8922 Audio Amplifier 2x25W

TDA8922 general description:


The TDA8922 is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 × 25 W. The device is available in the HSOP24 power package with a small internal heatsink and in the DBS23P through-hole power package. Depending on the supply voltage and load conditions, a very small or even no external heatsink is required. The amplifier operates over a wide supply voltage range from ±12.5 to ±30 V and consumes a very low quiescent current.


TDA8922 features:


  • High efficiency (∼90%)
  • Operating supply voltage from ±12.5 to ±30 V
  • Very low quiescent current
  • Low distortion
  • Usable as a stereo Single-Ended (SE) amplifier or as amono amplifier in Bridge-Tied Load (BTL)
  • Fixed gain of 30 dB in Single-Ended (SE) and 36 dB in
  • Bridge-Tied Load (BTL)
  • High output power
  • Good ripple rejection
  • Internal switching frequency can be overruled by an external clock
  • No switch-on or switch-off plop noise
  • Short-circuit proof across load and to supply lines
  • Electrostatic discharge protection
  • Thermally protected.

TDA8922 applications:


  • Television sets
  • Home-sound sets
  • Multimedia systems
  • All mains fed audio systems
  • Car audio (boosters).

TDA8922 amplifier diagram, circuit:


TDA8922 pcb layout:



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