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AK4955 - 24bit Stereo CODEC

General Description

The AK4955 is a 24bit stereo CODEC with a microphone amplifier, speaker amplifier, video amplifier, LDO, and DSP.

The input circuits include a microphone amplifier and the output circuits include a speaker amplifier.

It is suitable for portable application with recording/playback function.

Key Features

  • 1. Recording Functions.
  • Stereo Single-ended input with two Selectors.
  • MIC Amplifier (+24dB/+21dB/+18dB/+16dB/+14dB/+11dB/+8dB/+5dB/0dB).
  • Digital ALC (Automatic Level Control) (Setting Range: +36dB ∼.
  • 54dB, 0.375dB Step).
  • ADC Performance: S/(N+D): 81dB, DR, S/N: 88dB (MIC-Amp=+18dB) S/(N+D): 82dB, DR, S/N: 9.

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AK4950 24bit Stereo CODEC
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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.

View original datasheet text
[AK4955] AK4955 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP/ LDO & DSP GENERAL DESCRIPTION The AK4955 is a 24bit stereo CODEC with a microphone amplifier, speaker amplifier, video amplifier, LDO, and DSP. The input circuits include a microphone amplifier and the output circuits include a speaker amplifier. It is suitable for portable application with recording/playback function. A one channel composite In/Out video amplifier is also integrated. The internal charge pump generates a negative power eliminating the need for AC-coupling capacitors. The AK4955 is available in a small 36pin CSP (3.0mm x 3.1mm, 0.5mm pitch), saving mounting area on the board. FEATURES 1.