Alc271x Datasheet |top| Here
Usually maps within the 0x0271 or closely related 0x0269 families depending on the exact hardware revision revision. Driver Configurations
It acts as the primary thermal dissipation path for heat generated by the integrated . This pad must be soldered directly to a dedicated copper ground plane on the PCB via an array of thermal vias. Key Features and Protocol Compliance AC'97 Revision 2.2 Framework Compatibility
Place 0.1µF ceramic surface-mount capacitors as close as possible to the and DVDD pins to suppress high-frequency ripple. For bulk energy storage, place a 10µF tantalum or ceramic capacitor near the analog power plane entry point. Grounding Layout (AGND vs. DGND) alc271x datasheet
The ALC271x series is part of Realtek's efforts to offer robust audio solutions that meet the demands of both consumers and manufacturers looking for reliable, high-performance audio codecs. These chips are usually designed to support a wide range of audio applications, including 2-channel and multi-channel audio systems.
Bridge-Tied Load (BTL) outputs designed to drive internal 4-ohm or 8-ohm stereo speakers directly. 3. Control and Auxiliary Pins Usually maps within the 0x0271 or closely related
This chip belongs to Realtek's legacy HD Audio codec family and was widely adopted by major laptop manufacturers such as Acer, which incorporated the ALC271X into numerous models including the Aspire V3-571G, Aspire V5-571G, Aspire One AO725, TravelMate P243, and Aspire 4739 series. For context, the ALC271X is positioned as a "lightweight" codec in Realtek's lineup—a 2-channel solution optimized for portability and low power consumption, in contrast to desktop-oriented 8-channel codecs like the ALC885.
Since Realtek does not host these publicly for end-users, you can find the technical PDF through these community-trusted repositories: AllDatasheet: Often carries the ALC271X-VB6-CG Datasheet for a high-level overview. The RetroWeb: Key Features and Protocol Compliance AC'97 Revision 2
The ALC271X is a high-quality audio codec designed for use in modern computers, laptops, and multimedia devices. It delivers high-fidelity sound with stereo and multi-channel playback support, utilizing either AC'97 or HD Audio interfaces. The codec features integrated technologies to enhance the audio experience, including noise cancellation, automatic microphone adjustment, and S/PDIF output support.