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AS3412 Active Noise Cancellation

Ultra small ANC speaker driver


  • 30dB noise reduction achievable
  • Integrated bypass switches
  • Up to 34mW stereo output power
  • Full digital control
  • Support of feedforward topology
  • WL-CSP 2.2x2.2mm package; 0.4mm pitch


  • No mechanical switch for passive playback
  • Reduced hiss noise level
  • Ultra small PCB size

Product parameters

Function Receive path
Topology Feedforward
Output Type Stereo/BTL
Max. Output Power 50mW mono differential @16 Ohm load; 34mW mono differential @32 Ohm load
SNR, THD >112dB, 0.008% (single ended, 10mW, 32 Ohm load)
ANC Performance >30dB
Supply Voltage 1.6V to 1.8V
Package WL-CSP25 (2.2x2.2)

General Description

Analog ANC solution

Active Noise Cancellation technology maximizes the end-user experience in today's advanced world of mobile communications, enabling crystal clear sound during phone conversations or music listening regardless of the surrounding environment noise.

A highly integrated system in combination with lowest power consumption on the market plus a cost-effective price model makes the AS3412 ideally suited for smartphones or other mobile devices.

The AS3412 is targeting feed-forward topology and is able to effectively reduce ambient noise up to 3 kHz. Used in a true wireless ear piece AS3412 even enables state of the art hybrid noise cancellation.

Not Recommended for New Designs
ams-OSRAM AG is discontinuing production of this device. Final lifetime buy order must be placed by June 30, 2021. Please contact your local sales representative for further information.

This product suits for the following applications:

  • Mobile accessory
  • Stereo on-ear headsets
  • Stereo earpieces
  • Multimedia devices


Title Category Headline Buy
AS3412EvalKit Application Board Evaluation Kit for AS3412

Technical Documents

Type Description Language
Datasheet Document version 1-00 English


Type Description Language
EoL Notification AS1xxx, AS25xx, AS3xxx, AS73211, AS89020, SL900A, TMD4704 (issued 2020-Dec) English
Product Change Notification CN43-2020 (issued 2020-Aug) English

Other Information

Type Description Language
Block Diagram AS3412 Block Diagram English
Factsheet Active Noise Cancellation English
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