Typically operates at 3.3V for digital circuits and 5V or lower for analog, optimized for power efficiency in laptops. 2. ALC271X Technical Specifications
) entirely over the digital ground plane. Never allow these high-speed digital traces to cross over sensitive analog trace fields ( ) to prevent audible digital hum or whine.
It adheres to the Intel High Definition Audio Specification , which allows for multiple independent audio streams and high-resolution sound.
Realtek generally does not provide public datasheets for their codec chips on their main website; these are typically restricted to manufacturers (OEMs/ODMs) under NDA. alc271x datasheet
Because headphone and microphone jacks are external touchpoints, implement transient voltage suppressor (TVS) diodes on all external lines to safeguard the ALC271X from electrostatic discharge.
Features a high signal-to-noise ratio (SNR) and low distortion rates to support high-quality multimedia applications. Common Variants:
Integrated headphone amplifiers and microphone pre-amps with acoustic echo cancellation support. Jotrin Electronics 2. Pinout & Schematics Guide Typically operates at 3
The is a highly integrated, high-performance Audio Codec IC designed primarily for laptops, netbooks, desktop computers, and multimedia motherboards. Engineered by Realtek Semiconductor Corp. , this chip acts as a bridge between a computer's central processor and its analog audio components, including microphones, speakers, and headphones.
| Source | Part Number Availability | |---|---| | Jotrin | ALC271X-VB6-CG, ALC271X-VB3-GR, ALC271X | | Win-Source | ALC271X-VB3-GR | | Bonchip | ALC271X-VB6-CGT, ALC271X | | Datasheet39 | ALC271X (generic) | | Ariat-Tech | ALC271X |
The is packaged in a 48-pin QFN (QFN-48), offering a small footprint necessary for modern, thin laptops and tablets. Description Analog In/Out Stereo Headphone Out, Line Input, Microphone Inputs. Digital I/O HDA Link pins (SDO, SDI, BCLK, SYNC, RESET#). Power Digital and Analog power rails (typically 3.3V/1.8V). Control Jack detection pins and GPIOs. Never allow these high-speed digital traces to cross
The reference timing clock governing bus communication synchronization.
If you are looking for specific revisions (e.g., ALC271X-VB6-CG) or CAD models (Symbols/Footprints) for your design, you can: Request a quote for pricing and stock information. Check Ultra Librarian for 3D models.
Most of these distributors require registration or direct inquiry to download the full PDF datasheet.
Realtek ALC271X High Definition Audio Codec: Technical Overview, Specifications, and Datasheet Guide
: Manufactured in a highly space-efficient, 48-pin QFN (Quad Flat No-lead) micro-package, optimized for dense multi-layer printed circuit boards (PCBs).