AN12969A Datasheet | Panasonic

Overview ……………………………………………………………………………………………………………. 3 - Features ……………………………………………………………………………………………………………. 3 - Applications ………………………………………………………………………………………………………… 3 - Package ……………………………………………………………………………………………………………. 3 ……………………………………………………………………………………… 4 - Type ………………………………………………………………………………………………………………… 3 - Application Circuit Example - Pin Descriptions …………………………………………………………………………………………………… 5 - Absolute Maximum Ratings ………………………………………………………………………………………. 7 - Operating Supply Voltage Range ……………………………………………………………………………….. 7 - Electrical Characteristics …………………………………………………………………………………………. 8 - Electrical Characteristics (Reference values for design) ……………………………………………………… 10 - Technical Data ……………………………………………………………………………………………………. 12 1. I2C-bus Mode …………………………………………………………………………………………………….. 14 2. Operating temperature guarantee of I2C-Bus control ………………………………………………………… 16 3. Usage note of I2C-bus ……………………………………………………………………………………………... 16 4. I/O block circuit diagrams and pin function descriptions …………………………………………………….. 17 5. Power supply and logic sequence ……………………………………………………………………………… 23 6. Explanation on mainly functions ………………………………………………………………………………... 25 7. PD - Ta diagram ……………………………………………………………………………………………….. 29 - Usage Note ………………………………………………………………………………………………………… 30 .. SDE00027BEB I2C bus control patible AGC built-in stereo BTL amplifier IC (For driving a piezoelectric speaker) - Overview AN12969A has a built-in AGC function in a stereo BTL amplifier for driving a piezoelectric speaker to prevent noise at output clip, and has a built-in a charge-pump power supply for driving speaker output amplifiers. 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...