FSC-BT1057 Qualcomm QCC5171 Dua-Mode Bluetooth 5.3 LE Audio Module for TWS Earbuds & Hearables


The Feasycom FSC-BT1057 is a premium tier, ultra-low power dual-mode Bluetooth 5.3 audio module that integrated LE Audio and Classic Bluetooth audio, optimized for use in truly wireless earbuds and hearables. FSC-BT1057 supports LE Audio use cases and CD-Lossless (16-bit 44.1kHz) audio with Snapdragon Sound™ technology, integrated features include third generation Qualcomm® Adaptive Active Noise Cancellation (ANC), with full-band ambient mode for strong, effective noise cancellation and a natural feeling of spatial awareness. FSC-BT1057 audio codes include aptX, aptX-HD, aptX adaptive, SBC and AAC etc. The FSC-BT1057 LE Audio module supports communicating with the FeasyBlue app and many other Bluetooth apps.


  • Qualified to Bluetooth v5.3 specification
  • Extremely low-power performance
  • Dual 240 MHz Qualcomm @ KalimbaTM audio DSPs
  • 32/80 MHz Developer Processor for applications
  • High-performance 24-bit stereo audio interface
  • Digital and analog microphone interfaces
  • Flexible LED controller and LED pins with PWM support
  • Serial interfaces: UART, Bit Serializer (l2C/SPI), USB 2.0
  • Support for Qualcomm ANC - feedforward, feedback, hybrid and adaptive
  • Support for 3rd party innovation via the Qualcomm® Voice and Music Extension Program
  • Integrated PMU: Dual SMPS for system/digital circuits, Integrated Li-ion battery charger


  • TWS Earbuds & Hearables
  • High-Quality Stereo Headsets
  • Wireless Speakers


Bluetooth Module FSC-BT1057
Bluetooth Version Bluetooth 5.3 (Bluetooth® Low Energy, Bluetooth® Classic, Dual-mode Bluetooth®)
Chipset Qualcomm QCC5171
Dimension (mm) 13 × 26.9 × 2.2
Transmit Power +15 dBm (Typ. VBAT = 3.7V)
Audio Code aptX, aptX-HD, aptX adaptive, SBC, and AAC audio codecs
Frequency 2.402 ~ 2.480 GHz
Power Supply 2.8V ~ 4.3V
Operating Temperature -40°C ~ +85°C
Storage Temperature -40°C ~ +85°C
Highlights Integrated LE Audio and Classic Bluetooth audio, Excellence in audio, Integrated noise cancellation

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