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: Outfitted with a high SNR DAC design (typically around 95dB to 100dB A-weighting ) to prevent hiss and floor noise over headphone channels.
The Realtek ALC271X is a High Definition audio codec with 2+2 channel support and integrated digital microphone capabilities, often utilizing a 48-pin QFN package. Closely related to the ALC269 series, it features an extended operating temperature range and is designed to meet Microsoft Windows logo requirements. Detailed technical parameters for the ALC271X-VB6-CG variant are available at Realtek ALC269 DAC+ADC DClass audio codecdatasheet-16rd alc271x datasheet
High SNR for both ADC (Analog to Digital Converter) and DAC (Digital to Analog Converter) circuits, ensuring clear audio capture and playback with minimal background noise.
It adheres to the Intel High Definition Audio Specification , which allows for multiple independent audio streams and high-resolution sound. Ask me to search for similar Realtek alternatives
Advanced jack detection allows for automated switching between headphone and speaker outputs, enhancing user experience. 3. Pin Configuration and Package (QFN-48) The ALC271X is commonly packaged in a
High-performance DAC/ADC with high Signal-to-Noise Ratio (SNR) and low distortion rates. Closely related to the ALC269 series, it features
The ALC271X is typically packaged in a 64-pin TQFP (Thin Quad Flat Package) or a 48-pin LQFP (Low-profile Quad Flat Package). The pinout includes:
The ALC271x typically supports standard audio interfaces such as I2S (Inter-IC Sound), AC'97, and possibly others, facilitating easy integration with various types of digital audio processors and systems.
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
The datasheet explicitly notes that the ALC271X does not support "Power State Mapping" for all inputs simultaneously. You cannot use Line-in and Mic-in at the same time in hardware.