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

AS3418 Active Noise Cancellation

Enhanced ultra-small ANC speaker driver


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.

Key Features

  • Integrated music bypass switch
  • Low power consumption (<10mW@1.8V)
  • EEPROM memory for standalone mode
  • 118.5dB signal to noise ratio (Line to HPH)
  • I²C control interface
  • Mono differential line input support
  • TWS Hybrid ANC Support
  • WL-CSP25 2.45x2.93mm package; 0.4mm pitch

Key Benefits

  • 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 Facts

Function Receive path
Topology Feed Forward, Feed-Back, Hybrid
Output type Stereo/BTL
Max output power (BTL, 1.8V, 32 Ohm) [mW] 90
SNR, THD (SE, 34mW, 32Ohm) [dB] 118.5
ANC performance [dB] >30
Supply voltage [V] 1.4 to 1.8
Package WL-CSP25
2.45x2.93mm package; 0.4mm pitch

Additional Information

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