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Datasheet AS3501-EQFP - AustriaMicroSystems Audio Amplifiers

AustriaMicroSystems AS3501-EQFP

Part Number: AS3501-EQFP

Manufacturer: AustriaMicroSystems

Description: Audio Amplifiers

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AS3501 AS3502
L o w P o w e r Am b i e n t N o i s e - C a n c e l l i n g Sp e a k e r D r i v e r
Da ta Sh ee t
1 General Description
The AS3501/02 are speaker driver with Ambient Noise Cancelling function for headsets, headphones or ear pieces. It is intended to improve quality of e.g. music listening, a phone conversation etc. by reducing background ambient noise. The fully analog implementation allows the lowest power consumption, lowest system BOM cost and most natural received voice enhancement otherwise difficult to achieve with DSP implementations. The device is designed to be easily applied to existing architectures. An internal OTP-ROM can be optionally used to store the microphones gain calibration settings. The AS3501/02 can be used in different configurations for best trade-off of noise cancellation, required filtering functions and mechanical designs. The simpler feed-forward topology is used to effectively reduce low frequency background noise. The feed-back topology


  • Maximum Power Dissipation: 200 mW
  • Mounting Style: SMD/SMT
  • Operating Supply Voltage: 1 V to 1.8 V
  • Output Power: 12 mW
  • Package / Case: QFN-24
  • Packaging Type: Reel
  • Product: Audio Line Drivers / Receivers
  • Supply Current: 5 mA
  • Supply Voltage Range: 1 V to 1.8 V
  • THD plus Noise: 0.1 %
  • RoHS: Yes

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