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9.5V分布式 Smart PA_Hybrid Smart PA_FourSemi傅里叶


FS1758N
9.5V分布式 Smart PA

简介

FS1758N是一款模拟输入、集成温度保护功能的分布式智能扬声器功率放大芯片,具备高性能、低功耗的特性,搭配傅里叶SDG微型扬声器振幅和温度保护算法、FS Sound音效算法,适用手机、平板、智能手表、智能家居等设备。

特点

● Boost converter voltage up to 9.5V

● High performance Class-D amplifier

- 5.2W 1% THD+N (8Ω at 4.2V)

- 6.0W 1% THD+N (6Ω at 4.2V)

- 112dB SNR at 1% THD+N(8Ω at 4.2V, 18dB gain)

● High efficiency boost

- Total efficiency of boost + Class-D up to 82.5%

- Class-G adaptive boost control for longer battery life

● Ultra low noise

- 12μV (receiver mode, 7.5dB gain)

- 17μV (speaker mode, 18dB gain)

● High PSRR: 82dB (217Hz)

● Support differential or single-ended analog input 

● Integrated speaker coil temperature protection module

● Battery Safeguard Protection

● Thermal foldback

● Thermal and overcurrent prevention

● Support 1.8V logic I2C control


封装尺寸

9.5V分布式 Smart PA
芯片料号芯片封装芯片尺寸(mm)
FS1758NFCQFN-20L2.5 x 2.5


原理框图

FS1758N.png