AS3421 Active Noise Cancellation
Low power ambient noise cancellation speaker driver
- >25dB noise reduction achievable
- High quality audio chain
- Fully electronic calibration
- Differential line inputs
- 1.0V - 1.8V supply
- Superior performance
- Pure, unadulterated audio
- No manual intervention during production
- Seamless connection to BT SoC's
- Optimised system efficiency
|Output Type||Stereo SE|
|Max. Output Power||34mW@16 Ohm load; 24mW@32 Ohm load|
|SNR, THD||>100dB, <0.1% (SE, 34mW, 16 Ohm)|
|Supply Voltage||1.0V to 1.8V|
Analog ANC solution
Integrated active noise cancellation solution addressing feedforward architecture for stereo wireless headsets, suitable for music, video or mobile use.
Not Recommended for New Designs
ams AG does not recommend using AS3421 for new designs. Final lifetime buy order must be placed by April 30, 2020.
Please see AS3435 for possible replacement.
This product suits for the following applications:
- Stereo Bluetooth headsets
- Stereo wireless headsets
|Datasheet||Document version 1.10||English|
|Material Declaration Form||MDF_188720012_AS3421-EQFP||English|
|EoL Notification||AS3421 (issued 2019-Oct)||English|
|Factsheet||Stereo Bluetooth ANC Headphone Speaker Driver||English|
AS3412 Active Noise Cancellation
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.
AS3415 Active Noise Cancellation
Integrated active noise cancellation solution with integrated bypass function addressing feedforward architecture for stereo wired headsets, suitable for music, video or mobile use.
AS3435 Active Noise Cancellation
Integrated active noise cancellation solution with integrated bypass function addressing feedback and hybrid architectures for stereo wired headsets, suitable for music, video or mobile use.
AS3418 - Active Noise Cancellation
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.