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 gathered domestic elite design and development team, and launched domestic Smart PA FS1601 and large power amplifier FS2105 in 2017 and 2021 respectively, achieving a breakthrough in this field in China.

"Focus on customers, serve the customer", is FourSemi's business philosophy. FourSemi cooperates with famous international supply chain and serves for all kinds of customers, including Xiaomi, Honor, Samsung, vivo and other internationally renowned enterprises.


  • 6Years
    Founded in 2016
  • 600Million
    Total Shipping Qty
  • 60+
    Audio Solutions

Company Philosophy

FourSemi Chronicle of Events
  • 2016

    Company established

  • 2017

    The first Smart PA product FS1601 successfully taped-out at the first time Received the first order, started the first shipment

  • 2018

    Entered ODM supply chain of big mobile brands

  • 2019

    Entered world brand supply chain, first tablet with FourSemi solution launched on the market . Expand SPC product branch

  • 2020

    More than 100 million chips had been shipped

  • 2021

    Shipments of this year exceeded all previous totals. More than 300 million chips had been shipped. The fifth anniversary celebration