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1.2 watt audio power amplifier using NJU7089

2014-11-09 00:39  
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Using the NJU7089 audio power amplifier integrated circuit can be designed a very simple audio amplifier electronic project that can be used in telephone applications and some other audio applications that require a small output power. This NJU7089 audio power amplifier will provide a 1.2 watt output power using a 5 volt power supply and a 0.5 watt output power using a 3.3 volt power supply . Both output powers are obtained on a 8 ohms load with THD of 1%. No external coupling capacitors are required because of the differential outputs.
The closed loop gain is adjusted by two external resistors, and a SD pin permit power down with muting the input signal.

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