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Alc271x Datasheet ~repack~

Realtek ALC271X (often seen as part number ALC271X-VB6-CG) is a High Definition (HD) Audio Codec

typically found in laptop and netbook motherboards. It is designed to provide high-fidelity audio processing with integrated features like headphone amplifiers and digital-to-analog converters (DACs). IC Components Key Technical Specifications The ALC271X belongs to the same family as the more common

and ALC272 series. While precise datasheets for the "X" variant are often restricted, its documented features align with standard mobile HD audio codecs: IC Components Audio Channels: Supports multi-channel HD audio (typically 2-4 channels). Audio Fidelity:

High-performance Digital-to-Analog Converters (DACs) reaching up to 100dB Signal-to-Noise Ratio Analog-to-Digital Converters (ADCs) with approximately Sample Rates: Supports standard rates including 44.1k/48k/96k/192kHz for playback. Integrated Amplifiers: headphone amplifiers

eliminate the need for external amp components on mobile devices. Power Efficiency:

Designed for low power consumption, making it suitable for portable computing. Package Type: Available in a 48-pin QFN (Quad Flat No-lead) package. Operating Temperature: Rated for an extended range of -40°C to 105°C IC Components Usage and Applications The ALC271X is primarily used in integrated PC audio solutions WIN SOURCE Laptops & Netbooks: alc271x datasheet

Used as the primary on-board sound chip for brands like Acer (e.g., Aspire series) and Dell. Connectivity:

Handles standard PC audio functions, including stereo speaker output, internal microphone arrays, and jack sensing for front-panel headphones. Sourcing and Safety If you are looking to purchase or replace this chip: ALC271X-VB6-CG.pdf - IC Components

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

The Realtek ALC271X is a high-performance, multi-channel High Definition Audio (HDA) codec designed primarily for portable and desktop computing systems. According to technical resources from Win Source, it is engineered for high-fidelity audio processing, featuring a high signal-to-noise ratio and low distortion rates to meet the rigorous demands of multimedia playback and recording. Key Technical Specifications

The datasheet for the ALC271X series, specifically the ALC271X-VB6-CG variant, outlines several critical parameters for hardware integration: Realtek ALC271X (often seen as part number ALC271X-VB6-CG)

Package Type: Typically housed in a 48-pin QFN (Quad Flat No-lead) package, making it suitable for compact motherboard designs.

Operating Temperature: It is specified to function reliably over an extended temperature range of -40°C to 105°C, ensuring stability in various environmental conditions.

Compatibility: It adheres to the Intel High Definition Audio Specification, which allows for multiple independent audio streams and high-resolution sound.

Compliance: The component is Lead-free and RoHS compliant, meeting modern environmental and safety standards for electronic manufacturing. Hardware Architecture and Features

The ALC271X serves as a bridge between digital data and analog sound. It integrates high-quality Digital-to-Analog Converters (DACs) and Analog-to-Digital Converters (ADCs). Notebook PCs and Ultrabooks

Audio Quality: Like similar models such as the Realtek ALC898, it is designed to achieve high SNR (often exceeding 100dB) to provide clear, "hiss-free" audio for headphones and speakers.

Input/Output Support: The codec supports various analog jacks with re-tasking capabilities and often includes built-in headphone amplifiers to drive low-impedance audio gear directly from the laptop or PC chassis.

Power Management: To extend the battery life of laptops, the datasheet highlights advanced power-saving states that allow the chip to consume minimal power when audio isn't being actively processed. Software and Driver Integration ALC271X REALTEK Audio ICs - Jotrin Electronics

Typical Applications:

  • Notebook PCs and Ultrabooks.
  • Small Form Factor (SFF) desktop motherboards.
  • Embedded systems requiring high-quality audio.

Key Features:

  • Audio Channels: 2+2 channel independent dual-mode output (supports 2-channel output and 2-channel independent headphone output).
  • DAC/ADC:
    • Two DACs (Digital-to-Analog Converters) supporting 20-bit resolution.
    • Two ADCs (Analog-to-Digital Converters) supporting 20-bit resolution.
    • Supports 44.1k/48k/96k/192kHz sample rates.
  • Audio Jack Detection: Features Jack Presence Detection for both playback and recording.
  • Power Management: Designed for low power consumption, supporting modern power-saving states (D0/D3).
  • Interface: Compliant with Intel High Definition Audio (HDA) specifications (Revision 1.0a).
  • S/PDIF: Supports S/PDIF (Sony/Philips Digital Interface) output for digital audio transmission.

Chapter 9: Where to Download the Official ALC271X Datasheet

Unlike modern components that are hidden behind NDA walls, the ALC271X datasheet is widely available due to the age of the chip.

Reliable sources for the official PDF:

  1. Datasheet Archive (Datasheet4U): Typically has the original Realtek PDF v1.4 (Final).
  2. Alldatasheet: Search ALC271X – look for the file with Realtek letterhead (watermarked).
  3. TechPowerUp VGA Bios Collection (Datasheet section): Occasionally features the audio codec datasheets.

Warning: Avoid "crawler" sites that deliver corrupted files or request payment. The ALC271X is an End-of-Life (EOL) component; no legitimate vendor charges for its datasheet.