The G1448 is an audio power amplifier that can continuouslydeliver 1 Watt average power to 8Ω speakerswith less than 1% distortion (THD+N) at 5V powersupply. Using BTL driving architecture, this audio amplifiercan directly drive the speaker load without thelarge output coupling capacitor. The supply voltagecan be as low as 3V, so it is very suitable for mobilephone and other portable electronic devices applications.The G1448 can be unity-gain stable. By changing externalRF/RIN resistor ratio, the customers can set theamplifier gain easily. The depopping circuitry is embeddedto suppress the power-on or power-off transitionnoises. Thermal protection circuitry is implementedto avoid unintentionally damaging.To save the power consumption, the G1448 can bedeactivated by pulling the shutdown pin low.