This class-D audio power amplifier is suitable for TV and home stereo set. TDA7882 IC chip provides class-D audio power amplifier solution. Since this chip has only mono channel, you need two pieces of this circuit for stereo application. The power supply voltage is flexible, accept (+-)10V to (+-)25V. This circuit needs a split supply (symmetric power supply). Here are the main features of this class-D amplifier:
- 25W OUTPUT POWER: RL = 8 ohm/4 ohm; THD = 10%
- HIGH EFFICIENCY
- WIDE SUPPLY VOLTAGE RANGE (UP TO ±25V)
- SPLIT SUPPLY
- OVER-VOLTAGE PROTECTION
- ST-BY AND MUTE FEATURES
- SHORT CIRCUIT PROTECTION
- THERMAL OVERLOAD PROTECTION
Here is the schematic diagram of this class-D amplifier circuit:
[Circuit's schematic diagram source: ST Microelectronics TDA7482 Data Sheet]
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