Knowles V2S on Flex

Knowles V2S on Flex is a high-performance multi-mode digital voice vibration sensor mounted on a flexible bias board. The device features a V2S specialized to improve voice call quality. The V2S provides up to 50dB of environmental noise suppression outdoors and indoors. The Knowles V2S on Flex requires no exclusive handling during integration into a final product.


  • Specialized sensor to improve voice call quality
  • Up to 50dB of environmental noise suppression (outdoors/indoors)
  • Higher SNR and bandwidth vs typical sensors for excellent fidelity
  • Size and power-optimized for TWS application
  • Ease of integration with the PDM interface
  • No specialized handling is needed during integration into a final product


  • Earphones
  • Wearables
  • Self-speech detection
  • Wind noise reduction
  • Imposter rejection


  • 64.5dB (A) Signal-to-Noise Ratio (SNR)
  • 4kHz bandwidth (±3dB)
  • 290uA/700uA current consumption (low pwr mode/normal mode)
  • -25dB ±1.5dB FS sensitivity and tolerance
  • 1.65V to 3.3V supply voltage
  • PDM digital interface
  • 600KHz to 950KHz/1.2MHz to 3.3MHz clock rates supported (low pwr mode/normal mode)
  • 3.30mm x 2.30mm x 0.93mm package dimensions

Dimensions (mm) & Pinout

Mechanical Drawing - Knowles V2S on Flex
Published: 2023-06-02 | Updated: 2023-06-05