Alc271x Datasheet Site
| Parameter | Value | |-----------|-------| | | ALC271X‑VB6‑CG, ALC271X‑VB3‑GR, ALC271X‑GR‑VB6 | | Package | 48‑pin QFN (Quad Flat No‑lead) "Green" package | | Audio Channels | 4‑channel DAC, 4‑channel ADC | | PCM Resolution (DAC/ADC) | 16 / 20 / 24‑bit | | Sampling Rates (DAC & ADC) | 44.1k / 48k / 96k / 192 kHz | | DAC SNR (A‑weighted) | 98 dB | | ADC SNR (A‑weighted) | 90 dB | | Digital Core Power | 3.3 V | | Digital I/O Power (HDA Link) | 1.5 V – 3.3 V | | Analog Power | 3.0 V – 5.5 V | | Power Stage Voltage | 4.5 V – 5.5 V | | Built‑in Regulator | 5 V‑to‑4.5 V linear regulator with 60 dB PSRR | | Jack Detection Pins | Two pins, each detecting up to 4 jacks; supports S/PDIF‑OUT detection | | GPIOs | 2 (pin‑shared with digital microphone interface) | | EAPD (External Amplifier Power Down) | Supported | | Anti‑pop Mode | Supported when AVDD is on and digital power off | | Operating Temperature Range | –40 °C to +85 °C |
The datasheet for the ALC271X series, specifically the variant, outlines several critical parameters for hardware integration:
The is a highly efficient, multi-channel High Definition Audio Codec designed by Realtek Semiconductor Corp. for laptop computers, desktop motherboards, and integrated multimedia systems. Sourcing the precise technical parameters for this chip requires navigating the ALC271X datasheet , a vital hardware guide for engineers designing circuits or technicians troubleshooting motherboard sound failures. alc271x datasheet
The codec incorporates , supporting independent two‑stereo‑channel or 2.1 audio playback . It also handles independent two‑stereo‑channel audio inputs, making it suitable for:
The 98 dB DAC SNR places the ALC271X in the mid‑tier performance bracket for its era, comfortably exceeding the requirements for Windows Logo Program (WLP) certification for Windows XP, Vista, and 7. This ensured that laptops using the ALC271X could pass Microsoft's audio fidelity tests without additional external codecs. | Parameter | Value | |-----------|-------| | |
: Typically shipped in a space-saving 48-pin QFN (Quad Flat No-leads) package, measuring either 6x6 mm or 7x7 mm.
The ALC271X's blend of high performance and low power consumption makes it a preferred choice for several sectors: : Typically shipped in a space-saving 48-pin QFN
Win Source : Offers stock status and basic parameter overviews for specific part numbers. ALC271X-VB6-CG Datasheet, PDF - ALLDATASHEET.COM
Several component distributors provide the ALC271X datasheet as a PDF:
| Model Quirk | Purpose | |-------------|---------| | | Enables ALC271X digital microphone workaround | | inv‑dmic | Inverted internal microphone workaround | | headset‑mic | Indicates a combined headset (headphone + mic) jack | | headset‑mode | Configures headset jack behaviour | | lenovo‑dock | Enables docking station I/O for Lenovo laptops |
Before diving into circuit design, here are the absolute maximum ratings and DC characteristics you must extract from the official datasheet: