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AS3421 Active Noise Cancellation

Low Power Ambient Noise Cancellation Speaker Driver

Integrated Active Noise Cancellation solution addressing feedforward architecture for Stereo wireless headsets, suitable for music, video or mobile use.

Key Features

  • >25dB noise reduction achievable
  • High quality audio chain
  • Fully electronic calibration
  • Differential line inputs
  • 1.0V - 1.8V supply

Key Benefits

  • Superior performance
  • Pure, unadulterated audio
  • No manual intervention during production
  • Seamless connection to BT SoC's
  • Optimised system efficiancy

AS3421 Applications

The devices are ideal for wireless devices like sterio Bluetooth headsets as well as stereo wireless headsets.

AS3421 Product Facts

Function Receive path
Topology Feedforward
Output type Stereo SE
Max output power (BTL, 1.8V, 32 Ohm) [mW] 32 SE: 35
SNR, THD (SE, 34mW, 32Ohm) [dB] >100, <0.1%
ANC performance [dB] >25
Supply voltage [V] 1.0 to 1.8
Package QFN-24 (4x4)