Realtek device drivers for Windows

Realtek PDF datasheets for ALC221

Welcome to the PDF datasheet, where you can download PDF files for ALC221. We currently have 197 PDF files available, of which only 1 are for ALC221. All PDF files come from public sources and from various websites where they have been freely downloadable.
If you have any datasheet missing here, write to us. Thank you.

File type


File name alc221_datasheet_0.65.pdf
Datasheet version 0.65
Release 2011-05-25  [May '11]
File size 1,07 MB
Downloaded 73×

Realtek PDF datasheet ALC221 for free download

Designed for the following chipset:
- ALC221-GR

The ALC221 is a High Definition Audio Codec that integrates 4-channel DAC, 4-channel ADC, and a mono and filter-less Class-D Speaker Amplifier with 2 Watt (rms) output power.

The 4-channel DAC and 4-channel ADC support two independent stereo sound outputs and two independent stereo inputs simultaneously, supporting multiple streaming playback and output for multimedia applications and voice communication. The codec has high performance and characteristics meets WLP (Windows Logo Program) audio requirements for Windows XP, Windows Vista and Windows 7 systems.

The ALC221 supports stereo digital microphone input with boost gain and digital volume control. With Realtek second generation of software Acoustic Echo Cancellation (AEC), Beam Forming (BF), and Noise Suppression (NS) technology, significantly improving voice input quality for VoIP application on PCs.

ALC221 has headphone amplifier can drive 32Ω headphone load without external DC blocking capacitors, eliminating pop noise caused by these capacitors. Addition to the cap-free headphone output port (HP-OUT), port LINE-OUT is also designed as a line level output without the need for DC blocking capacitors, that can keep away from pop noise whiling line level output connected to external power speaker.

The integrated mono Class-D amplifier is a filter-free design to directly drive mini speaker with as low as 4Ω impedance. Its maximum output power exceeds 2 Watt at 5V power supply. The inside high pass filter with selectable cut off frequency can prevent speaker burn up by low frequency sound. The class D amplifier output power also could be limited to avoiding damage mini speaker. ALC221 has over current and short circuit detection to protect integrated Class D amplifier and power system. Class D amplifier output will be shut down when connected speaker is broken with short and over-heating. More than protection functions, ALC221 has spread spectrum and slew rate control for Class D carrier frequency can reduce EMI radiation when Class D amplifier is in active.

Support for 16/20/24-bit S/PDIF output with up to 192kHz sample rate offers easy connection of PCs to consumer electronic products or transporting digital audio output to a High Definition Media Interface (HDMI) transmitter.

The ALC221 supports host audio from the Intel chipsets, and also from any other HDA compatible audio controller. With various software utilities like environment sound emulation, multiple-band and independent software equalizer, dynamic range compressor and expander, optional DTS CONNECT and Surround Sensation UltraPC, SRS TruSurround HD, SRS Premium Sound and Dolby Digital Live, Dolby PCEE program and 3rd party voice processing (Noise Suppression/Acoustic Echo Cancellation/Beam Forming) technology, the ALC221 provides an excellent package for PC users.

Click on the download icon to start downloading the PDF file.
This is not a driver, but technical information or information about the selected product.
The link to the documentation in PDF format is functional for the next 15 minutes!

Download PDFfrom 2011-05-25

We hope that our offer of available documents has helped you.
If so, please share information about our site - thank you.

Latest Windows 10 64bit drivers

Version Date DNL
6001.0.15.113 2022-02-22 1508×
1030.44.0809.2021 2021-12-20 227×
10.49.1223.2021 2021-12-20 752×
10.0.22000.21353 2021-11-24 962×
10.0.22000.21352 2021-10-11 35×

Latest Windows 11 64bit drivers

Version Date DNL
6001.0.15.113 2022-02-22 1508×
1030.44.0809.2021 2021-12-20 227×
10.0.22000.21353 2021-11-24 962×
10.0.22000.21352 2021-10-11 35×
6001.0.10.336 2021-09-07 388×

Latest Realtek PDF's

PDF Datasheet Date
RTL8722 2021-08-03
RTL8721 2021-08-03
RTL8720 2019-04-24
RTL8671 2019-04-10
RTL8822 2018-08-27

Copyright © 2006 - 2023, BUBIK s. r. o. | Designed by Bajola