ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)

AS3501 Active Noise Cancellation

Feedforward ANC solution for embedded systems


Active Noise Cancellation solution addressing feedforward architecture for embedded applications such as MP3 and Multimedia players

Key Features

  • >20dB noise reduction achievable
  • High quality audio chain
  • Fully electronic calibration
  • I²C interface 

Key Benefits

  • Superior performance
  • Pure, unadulterated audio
  • No manual intervention during production
  • User programmable

Product Facts

Function Receive path
Topology Feedforward
Output type Stereo SE / Mono BTL
Max output power (BTL, 1.8V, 32 Ohm) [mW] 125
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)

Additional Information

  • Headsets (Over-ear, On-ear and In-ear)
  • Hands-free kits
  • Mobile phones
  • Portable media players
  • Portable DVD players


AS3501/02 wins EDN China Innovation Award

ams AS3501/02 ANC solution to win EDN China's Annual Innovation Awards Competition

austriamicrosystems to win EDN China Innovation award 2010 - leading poduct