AN12959A Datasheet | Panasonic

Overview - Features - Package - Type ……..……………………………………………………………………………………………………. 3 ……..……………………………………………………………………………………………………. 3 ………………………………………………………………………………………………………. 3 …………………………………...………………………………………………………………………. 3 - Applications …………….………………………………………………………………………………………………… 3 …………………..………………………………………………………………………………. 5 ……………………..……………..………………………… ………………… 6 ………………….………………….…………………………………………………. 7 ……………………………………………………. 9 - Application Circuit Example (Block Diagram) ……….…………………………………………………………. 4 - Pin Descriptions - Absolute Maximum Ratings - Electrical Characteristics - Technical Data - Usage Notes - Operating Supply Voltage Range …………………………………………..……………………………………. 6 - Electrical Characteristics (Reference values for design) …………………………………….………….…………………………………………………. 10 ……….……………………….………………….…………………………………………………. 26 .. SDE00028BEB I2C bus control patible AGC built-in stereo BTL amplifier IC (For driving a piezoelectric speaker) - Overview AN12959A has a built-in AGC function in a stereo BTL amplifier for driving a piezoelectric speaker to prevent noise at output clip. And I2C bus control method is applied in switching of each mode like some Standby function is turned ON/OFF. - Features y The piezoelectric speaker can be driven by applying the circuit of high withstand voltage power amplifier. y On level in AGC can be selected by controlling I2C bus. y Attack and recovery times in AGC can be selected by controlling I2C bus. y Resistance and capacitor, which were used for conventional analog AGC aren’t needed anymore. y I2C is controlled almost in the same way as those of AN12979A/AN12978A. y Shut-down function is mounted. y Amplifier gain switching y The input circuit constructs a bus boost circuit easily and improves the sound quality of the piezoelectric speaker. - Applications y Audio amplifier for mobile, such as a cellular phone - Package y 21 pin plastic quad 5 column BGA package (0.5 mm pitch) - Type y Silicon Monolithic...