ALC231 PDF Datasheet – High Definition Audio Codec – Realtek

Part Number: ALC231

Function: High Definition Audio Codec

Package: 48-pin QFN Type

Manufacturer: Realtek Microelectronics


ALC231 datasheet pdf


The ALC231 is a High Definition Audio Codec that integrates a 4-channel DAC, 4-channel ADC, and a mono and filter-less Class-D Speaker Amplifier with 2Watt (rms) output power.

The 4-channel DAC and 4-channel ADC support two independent stereo sound outputs and two
independent stereo inputs simultaneously; allowing multiple streaming playback and output for
multimedia applications and voice communication. The ALC231 supports stereo digital microphone channels (microphone array) with Acoustic Echo Cancellation (AEC), Beam Forming (BF), and Noise Suppression (NS) technology simultaneously, significantly improving voice quality for PC VoIP applications. […]


1. Meets WLP (Windows Logo Program) requirements for Windows XP, Vista, and Windows 7

2. Analog DAC outputs with 97dB Signal-to-Noise Ratio (A-weighting)

3. Analog ADC inputs with over 90dB Signal-to-Noise Ratio (A-weighting)

4. 4-channel DAC supports 16/20/24-bit PCM format for independent two stereo channel playback

ALC231 Datasheet