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AS3400 Active Noise Cancellation

Single Channel (Differential) ANC Solution for Accessories

Integrated Active Noise Cancelling solution addressing feedforward and feedback architectures for Mono wired headsets, such as unified communications solutions and wired phone applications.

Block Diagram of the AS3400 Single Channel Active Noice Cancellation Speaker Driver

(Click to Enlarge)

Key Features

  • >20dB noise reduction achievable
  • No pop/click, high quality audio chain
  • Fully electronic calibration
  • Monitor or assisted hearing mode

Key Benefits

  • Superior performance
  • Pure, unadulterated audio
  • No manual intervention during production
  • Acoustic transparency when needed

AS3400 Applications

  • Mono Wired or Wireless Headsets
  • Headsets with High Impedance Speakers

AS3400 Product Facts

Function Receive path
Topology Feedforward or feedback
Output type Mono BTL
Max output power(BTL, 1.8V, 32 Ohm) [mW] 125
SNR, THD (SE, 34mW, 32Ohm) [dB] >100, <0.1%
ANC performance [dB] >20
Supply voltage [V] 1.0 to 1.8
Package QFN-24 (4x4)