Alc271x Datasheet Today

The ALC271X supports , enabling optical digital audio connections to external receivers or soundbars. The codec also features digital microphone interfaces (shared with GPIO pins), allowing direct connection of digital MEMS microphones without separate ADC chips.

| Parameter | Specification / Feature | | :--- | :--- | | | 16/20/24-bit PCM up to 192 kHz sample rate | | SNR (Signal-to-Noise) | 98 dB (DAC) / 90 dB (ADC) | | Output Channels | 4-channel DAC (Supports 2.1 or independent stereo) | | Input Channels | 4-channel ADC (Stereo or multi-source input) | | Power Voltages | 3.3V (Digital Core) / 1.5-3.3V (HDA IO) / 3.0-5.5V (Analog) | | Special Outputs | S/PDIF Out + 2W RMS Class-D Amplifier | | Package Type | QFN-48 (Lead-free / RoHS) | alc271x datasheet

High-performance DAC/ADC with high Signal-to-Noise Ratio (SNR) and low distortion rates. The ALC271X supports , enabling optical digital audio

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To save space on cramped laptop motherboards, the ALC271X often integrates a bridge-tied load (BTL) Class-D amplifier. This allows it to drive internal speakers directly without needing a massive external amp, reducing the overall Bill of Materials (BOM) for manufacturers. 3. Noise Suppression and Echo Cancellation