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AS3501 - Low Power Ambient Noise-Cancelling Speaker Driver

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.

Key Features

  • Microphone Input 128 gain steps @0.375dB and MUTE with AGC differential, low noise microphone amplifier single ended or differential mode supply for electret microphone MIC gain OTP programmable High Efficiency Headphone Amplifier 2x34mW, 0.1% THD @ 16Ω, 1.5V supply, 100dB SNR bridged mode for e. g. 300Ω loads click and pop less start-up and mode switching Line Input volume control via serial interface or volume pin 64 steps @ 0.75dB and MUTE, pop-free gain setting single ended stereo or mono di.

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Datasheet Details

Part number AS3501
Manufacturer austriamicrosystems AG
File Size 1.70 MB
Description Low Power Ambient Noise-Cancelling Speaker Driver
Datasheet download datasheet AS3501 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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AS3501 AS3502 Data Sheet Low Power Ambient Noise-Cancelling Speaker Driver 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.