NJU8752

Note 1) All voltage are relative to "V_SS =0V" reference.
Note 2) The LSI must be used inside of the "Absolute maximum ratings". Otherwise, a stress may cause permanent damage to the LSI.
Note 3) De-coupling capacitors for V_DD(Pin 1)-V_SS(Pin 14), V_DDO(Pin 7)-VSS(Pin 5) and V_DDO(Pin 8)-V_SS(Pin 10) should be connected for stable operation.

NJU8752 is a monaural analog signal input class D amplifier for Piezo speaker. The NJU8752 includes Inversion operational amplifier input circuit, PWM modulator, Output short protector and a low voltage detector. Input part operates on 3.3V(TYP) as power supply and Output part operates up to 13.75V(MAX).

Therefore, it drives Piezo speaker with Higher volume and High efficiency.

By using equivalent capacitance of Piezo speaker,the NJU8752 is configured as a BTL amplifier capable of operating Piezo speaker with the minimum external components. A BTL configuration eliminates the need for external AC coupling capacitors.

Class D achieves high output-efficiency, which leads to low power operation for Piezo speaker, thus the NJU8752 is ideally suited for battery powered applications.