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10V Non-DSP Smart PA


FS1962U is a smart PA chip integrated with I/V sense function . It has high performance while low power consumption and low output noise. Cooperating with FourSemi SDG, which is speaker excursion and temperature protection algorithm, and FS Sound audio algorithm, it applies to mobile phones, tablets, smart watches, smart home audio, etc.


● High fidelity 24-bits DAC

- DAC 112dB SNR

- 11µV output noise 

● High performance Class-D amplifier

- 5.6W 1% THD+N (8Ω at 4.2V)

- 5.7W 1% THD+N (6Ω at 4.2V)

- 88dB PSRR at 217Hz

- Low pop and click

● High efficiency Class-H

- Integrated high efficiency Class-H amplifier

- Up to 5.6W RMS output power with 8Ω load

- 84.5% efficiency at 1W (8Ω at 4.2V)

● Speaker voltage and current sense

● Brown-Out prevention

● Digital I2S I/O

- I2S I/O-8kHz-192kHz sample rates

- MCLK free operation

● I2C control port maximum speed up to 1MHz

● Mono Class-D speaker driver

● <1uA HW shutdown VBAT current

● Power supplies

- VBAT: 2.7V to 5.5V

- VDDD: 1.65V to 1.95V

● Thermal and over current protection

● DC removal and protection

● 36 Ball, 0.4mm pitch, WLCSP package

Package Size

10V Non-DSP Smart PA
Part NumberPackageSize(mm)
FS1962UWLCSP-362.51 x 2.47

Block Diagram