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AS3418 - Active Noise Cancellation

Enhanced ultra-small ANC speaker driver


  • Integrated music bypass switch
  • Low power consumption (<10mW@1.8V)
  • EEPROM memory for standalone mode
  • 118.5dB signal to noise ratio (Line->HPH)
  • I2C control interface
  • Mono differential line input support
  • TWS Hybrid ANC Support
  • WL-CSP30 package (2.645 x 2.545mm; 0.4mm pitch)


  • Longest battery lifetime
  • Smallest PCB size (less than 0.5cm²)
  • Best-in-class ANC performance
  • Lowest hiss noise level
  • ANC level control
  • Ambient noise monitor mode

Product parameters

Function Receive path
Topology Feedforward
Output Type Stereo/BTL
Max. Output Power 130mW (Mono Differential; 32 Ohm load)
SNR, THD 118.5dB, 0.007% (SE, 30mW, 32 Ohm load)
ANC Performance >30dB
Supply Voltage 1.4V to 1.8V
Package WL-CSP30 package (2.645mm x 2.545mm; 0.4mm pitch)

General description

Analog ANC solution

The AS3418 is ideally suited to enable ANC for true wireless earbuds due to its smallest size, lowest power consumption and best-in-class ANC. It improves the quality of music listening or phone conversations by reducing background ambient noise (>30dB). Because of its small system footprint, manufacturers are empowered to build ANC in very small and aesthetic form factors.

This product suits for the following applications:

  • TrueWireless ANC earbuds
  • Mono Earpieces
  • Stereo Earpieces
  • USB-C Headsets
  • MFi Headsets


Title Category Headline Buy
AS3418 Evaluation Kit Application Board AS3418 Evaluation Kit

Technical documents

Type Description Language
Datasheet AS3418 Low Noise ANC Solution English


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

Other information

Type Description Language
Block Diagram AS3418 Block Diagram English
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