Audio

ALC221 PDF Datasheet – High Definition Audio Codec

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This post explains for the audio codec.

The Part Number is ALC221.

The function of this semiconductor is High Definition Audio Codec.

The package is QFN-48.

Manufacturer: Realtek Microelectronics

Pinouts:

ALC221 datasheet pinout

Description

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.

Features

1. HDMI audio driver for Intel and AMD chipsets

2. Direct Sound 3D compatible

3. Enhanced Microphone Acoustic Echo Cancellation (AEC) […]

 

ALC221 Datasheet

NAU8401 Datasheet – 24-bit Stereo Audio DAC ( PDF )

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Part Number: NAU8401

Function: 24-bit Stereo Audio DAC with Speaker Driver

Package: 32-QFN Type

Manufacturer: Nuvoton

Pinouts:

NAU8401 datasheet

 

Description

The NAU8401 is a low power, high quality audio output system for portable applications. In addition to precision 24-bit stereo DACs, this device integrates a broad range of additional functions to simplify implementation of complete audio systems.

The NAU-8401 includes drivers for speaker, headphone, and stereo line outputs, and integrates mixing of the DAC outputs with analog input signals. Advanced on-chip digital signal processing includes a 5-band equalizer, a 3-D audio enhancer, and a digital limiter/dynamic range compressor function for the playback path. The digital interface can operate as either a master or a slave.  Additionally, an internal fractional-N  PLL is available to generate accurate audio sample rate clocks for the DAC derived from any available system clock from 8MHz through 33MHz.

Features

1. DAC: 94dB SNR and -84dB THD (“A” weighted)
2. Integrated BTL speaker driver: 1W into 8Ω
3. Integrated head-phone driver: 40mW into 16Ω
4. Integrated line inputs and line outputs
5. On-chip high resolution fractional-N PLL

Applications:

1. Personal Navigation Devices
2. Personal Media Players
3. Personal Navigation Devices

Other data sheets are available within the file: NAU8401YG, NAU8401Y

 

NAU8401 Datasheet PDF Download


NAU8401 pdf