WM8591 Datasheet, PDF (1/50 Pages) Wolfson Microelectronics plc – 24 BIT, 192 KHZ STEREO CODEC

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24-bit, 192kHz Stereo CODEC
WM8591
DESCRIPTION
FEATURES
The WM8591 is a high performance, stereo audio CODEC with
single-ended inputs and differential outputs. It is ideal for
surround sound processing applications for home hi-fi, DVD-
RW and other audio visual equipment.
The stereo 24-bit multi-bit sigma delta ADC has programmable
gain with limiting control. Digital audio output word lengths from
16-32 bits and sampling rates from 32kHz to 96kHz are
supported.
A stereo multi-bit sigma delta DAC is used with digital audio
input word lengths from 16-32 bits and sampling rates from
32kHz to 192kHz.
The WM8591 supports fully independent sample rates for the
ADC and DAC. The audio data interface supports I²S, left
justified, right justified and DSP formats.
The device is controlled in software via a 2-wire serial interface
which provides access to all features including volume controls,
mutes, and de-emphasis facilities. The device is available in a
28-pin SSOP package.
• Audio Performance
− 110dB SNR (‘A’ weighted @ 48kHz) DAC
− 102dB SNR (‘A’ weighted @ 48kHz) ADC
• DAC Sampling Frequency: 32kHz – 192kHz
• ADC Sampling Frequency: 32kHz – 96kHz
• Stereo ADC input analogue gain adjust from +24dB to –21dB in
0.5dB steps
• ADC digital gain from -21.5dB to -103dB in 0.5dB steps
• Programmable Limiter on ADC input.
• Stereo DAC with differential analogue line outputs.
• 2-wire Serial Control Interface
• Master or Slave Clocking Mode
• Programmable Audio Data Interface Modes
− I²S, Left, Right Justified or DSP
− 16/20/24/32 bit Word Lengths
• 4.5V to 5.5V Analogue, 2.7V to 3.6V Digital supply Operation
• 28-pin SSOP Package
APPLICATIONS
BLOCK DIAGRAM
• Surround Sound AV Processors and Hi-Fi systems
• DVD-RW
WOLFSON MICROELECTRONICS plc
w :: www.wolfsonmicro.com
Product Preview, May 2005, Rev 1.0
Copyright 2005 Wolfson Microelectronics plc