Part Number: ALC221
Function: HIGH DEFINITION AUDIO CODEC
Package: 48-pin QFN Type
Manufacturer: Realtek Microelectronics
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Description
The ALC221 is a High Definition Audio Codec that integrates 4-channel DAC, 4-channel ADC, and a mono and filter-less Class-D Speaker Amplifier with 2 Watt (rms) output power.
The 4-channel DAC and 4-channel ADC support two independent stereo sound outputs and two
independent stereo inputs simultaneously, supporting multiple streaming playback and output for
multimedia applications and voice communication. The codec has high performance and characteristics meets WLP (Windows Logo Program) audio requirements for Windows XP, Windows Vista and Windows 7 systems. [ … ]
Features
1. Meets WLP (Windows Logo Program) requirements for Windows XP, Vista and Windows 7
2. Analog DAC output with 97dB Signal-to-Noise Ratio (A-weighting)
3. Analog ADC input 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