AS3517 - austriamicrosystems AG

AS3517 Stereo Audio Codec

The AS3517 is a low power stereo audio codec and is designed for Portable Digital Audio Applications. It allows playback and recording in CD quality. It has a variety of audio inputs and outputs to directly connect electret microphones, 16Ω/32Ω headsets and auxiliary signal sources via a 10channel mixer. It only consumes 20mW in playback mode. Further the de.

Features

• Multi-bit Sigma Delta Converters
  – DAC: 94dB SNR (‘A’ weighted) @ 2.9V
  – ADC: 90dB SNR (‘A’ weighted) @ 2.9V
  – Sampling Frequency: 8-48kHz
• 2 Microphone Inputs
  – 3 gain pre-setting (28dB/34dB/40dB) and AGC
  – 32 gain steps @1.5dB and MUTE
  – supply for electret microphone
  – microphone detection
  – remote control by switch
• 2 Line Inputs
  – volume control via serial interface
  – 32 steps @1.5dB and MUTE
  – stereo or 2x mono or mono differential
• Audio Mixer
  – 10 channel input/output mixer with AGC
  – mixes line inputs and microphones with DAC
  – left and right channels independent
• 2 Line Outputs.