BCD-Atlantik Ltd

QCC-5121-0-81WLNSP-TR-00-0 Qualcomm QCC5121 SoC

Extremely low power premium tier Bluetooth Audio SoC, designed for use in compact, feature rich wire-free earbuds, hearables and headsets.
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Product Details
The Qualcomm® QCC5121 System-on-Chip (SoC) is designed to meet consumer demand for robust, high quality, wireless Bluetooth listening experiences in small devices with low power consumption for longer audio playback.

QCC5121 architecture is engineered for high performance with low power consumption. Power consumption can be reduced by up to 65 percent compared to our previous technology, for both voice calls and music streaming and devices are optimized to support longer audio playback in virtually all operating modes.

The flexibility provided by the programmable applications processor and audio DSPs helps manufacturers to easily differentiate products with new features without extended development cycles. QCC5121 is designed to support voice assistant through cloud services.

QCC5121 features digital active noise cancelling (ANC) technology integrated in the SoC, designed to eliminate the need for an external ANC solution. With Qualcomm TrueWireless™ technology, QCC5121 is engineered to deliver improved robustness and more evenly balanced power distribution between both earbuds, supporting longer playback time.


  • Extremely low power design
  • Bluetooth 5 radio
  • 2 Mbps Bluetooth low energy (LE) support
  • Ultra-small form factor
  • Powerful quad-core processor architecture
    • Dual core 32-bit processor application subsystem
    • Dual core Qualcomm® Kalimba™ DSP Audio subsystem
  • Embedded ROM + RAM and external Q-SPI Flash
  • High performance low power audio
  • 2-ch 98dBA headset class D
  • 2-ch 99dBA line inputs (single ended)
  • 192kH24-bit I²S & SPDIF interfaces
  • Comprehensively programmable digital ANC
  • Digital assistant ready
  • Flexible software platform with powerful new IDE support
  • aptX, aptX HD, and aptX Adaptive support
  • Support for Qualcomm TrueWireless Stereo and Qualcomm TrueWireless Stereo Plus
  • Integrated battery charger supporting internal mode (up to 200 mA) and external mode (up to 1.8 A)
  • Designed for reduced eBoM through highly integrated SoC design
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