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WM8521_06

Description
Stereo DAC with Integrated Output Stage for 2Vrms LINE OUT
File Size253KB,20 Pages
ManufacturerWolfson Microelectronics plc (Cirrus Logic)
Websitehttp://www.wolfson.co.uk
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WM8521_06 Overview

Stereo DAC with Integrated Output Stage for 2Vrms LINE OUT

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DESCRIPTION
The WM8521 is a 192kHz stereo DAC with an integrated output
op-amp stage, designed to generate a 2.0Vrms output signal
directly, so reducing external component requirements in digital
audio applications.
WM8521 comes into two variants WM8521HC and WM8521H9
which offers different line drive output capabilities. WM8521HC
outputs 2Vrms at 12V supply, while WM8521H9 outputs
2.0Vrms at 9V supply. WM8521HC/H9 are designed for cost
sensitive consumer digital audio applications requiring 2Vrms
line output.
A 24-bit multi-bit sigma delta DAC is used with oversampling
digital interpolation filters. Digital audio input word lengths from
16-32 bits and sampling rates from 8kHz to 192kHz are
supported.
The audio interface supports I S, Right Justified and DSP digital
audio formats.
The devices are controlled via a hardware interface which
provides access to features including de-emphasis, mute and
data formats. These devices are pin equivalent and are
available in a 14-lead SOIC package.
2
WM8521
Stereo DAC with Integrated Output Stage
for 2Vrms LINE OUT
FEATURES
Audio Performance
- DAC SNR 98dB (‘A’ weighted @ 48kHz)
- THD -81dB (‘A’ weighted @ 48kHz)
DAC Sampling Frequency: 8kHz – 192kHz
Pin Selectable Audio Data Interface Format
- I
2
S, 16-bit Right Justified or 16bit DSP
2.0 Vrms output at 12V or 9V supply
7.6V to 13.2V Analogue, 2.7V to 3.6 Digital Supply
14-lead SOIC Package
APPLICATIONS
Consumer digital audio applications requiring 2 Vrms output
- DVD Players
- Digital TV
- Digital Set Top Boxes
- A/V Receivers
BLOCK DIAGRAM
WOLFSON MICROELECTRONICS plc
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Production Data, August 2006, Rev 4.1
Copyright
2006
Wolfson Microelectronics plc

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