The LM48560 is a high voltage, high efficiency, Class H driver for ceramic speakers and piezo actuators. The LM48560’s Class H architecture offers significant power savings compared to traditional Class AB amplifiers. The device provides 30VP-P output drive while consuming just 4mA of quiescent current from a 3.6V supply.
The LM48560 features National’s unique automatic level control (ALC) that provides output limiter functionality. The LM48560 features two fully differential inputs with separate gain settings, and a selectable control interface. In software control mode, the gain control and device modes are configured through the I 2C interface. In hardware control mode, the gain and input mux are configured through a pair of logic inputs
