FS1894SU is a smart PA chip integrated with FourSemi SDG, which is speaker excursion and temperature protection algorithm, FS Sound audio algorithm and I/V sense function. It has high performance while low power consumption and applies to mobile phones, tablets, smart watches, smart home audio, etc.
● High fidelity 24-bits DAC
- DAC 111dB SNR
- 17µV output noise
● High efficiency adaptive boost
- Integrated boost converter with maximum boost up to 10V
- Support adaptive mode for optimized power consumption
● High efficiency Class-H
- Integrated high efficiency Class-H amplifier
- Up to 5.5W RMS output power with 8Ω load
● Built in audio processor
- 10-Bands parametric equalizer
- Programmable compressor & limiter
- Stereo configuration integrated for RAS
- FS-Sound integrated (BASS,VOCAL,DE-ESSER)
● Adaptive speaker membrane displacement control
● Adaptive speaker voice coil temperature control
● Digital I2S I/O
- I2S I/O-8kHz-48kHz sample rates
● I2C control port maximum speed up to 1MHz
● Mono Class-D speaker driver
2.78 x 2.78
FourSemi was founded in 2016. The founding team comes from well-known international semiconductor companies, such as Qualcomm, NXP, Texas Instruments, etc. The core backbone team all have more than 20 years of semiconductor industry experience. FourSemi focuses on high-performance digital-analog hybrid chip design. Products cover smart PA, audio power amplifier, haptics driver, car audio, professional audio system and are widely used in mobile phones, tablets, wearable devices, smart speakers, automotive applications, personal computers , etc.
FourSemi launched domestic Smart PA FS1601 and large power amplifier FS2105 in 2017 and 2021 respectively, achieving a breakthrough in this field in China.