ams OSRAM,Noise Cancellation, 32-Pin QFN AS3415-EQFM

The ams AG 32 pin integrated active noise cancelling function for headsets, headphones or ear pieces. They are intended to improve quality of e.g. music listening, a phone conversation etc. by reducing background ambient noise. The simpler feed-forward topology is used to effectively reduce frequencies typically up to 2-3 kHz.

Feed Forward, Feed Back and Hybrid
OTP production trimming via audio interface
Integrated depletion mode transistor