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DESCRIPTION
The WM8533 is a stereo DAC with integral charge pump and
software control interface. This provides 2Vrms line driver
outputs using a 3.3V power supply rail.
The device features ground-referenced outputs and the use
of a DC servo to eliminate the need for line driving coupling
capacitors and effectively eliminate power on pops and
clicks.
The device is controlled and configured either via the
I2C/SPI compliant serial control interface or a hardware
control interface.
The device supports all common audio sampling rates
between 8kHz and 192kHz using all common MCLK / fs
ratios. Master and slave modes are available and de-
emphasis is also supported.
The WM8533 has a 1.8 to 3.3V tolerant digital interface,
allowing logic up to 3.3V to be connected.
The device is available in a 1.842 x 1.772mm 20-ball WCSP.
WM8533
24-bit 192kHz Stereo DAC with 2Vrms Ground Referenced Line Output
FEATURES
High performance stereo DAC with ground referenced line
driver
Audio performance
106dB SNR (‘A-weighted’)
-89dB THD @ -1dBFS
Digital volume control ranging from -100dB to +12dB
120dB mute attenuation
All common sample rates from 8kHz to 192kHz supported
2
I C/SPI compatible and hardware control modes
2
Data formats: LJ, RJ, I S, DSP
De-emphasis supported
Maximum 1mV DC offset on line outputs
Pop/click suppressed power up/down sequencer
AVDD and LINEVDD +3.3V ±10% allowing single supply
DBVDD supply supports +1.8V or +3.3V digital I/O
1.842 x 1.772mm 20-ball WCSP
APPLICATIONS
Consumer digital audio applications requiring 2Vrms output
Set Top Box
Digital TV
DVD Players
Games Consoles
A/V Receivers
BLOCK DIAGRAM
CONTROL
INTERFACE
W
WM8533
LEFT
DAC
MCLK
BCLK
LRCLK
DACDAT
DIGITAL
AUDIO
INTERFACE
DIGITAL
FILTERS
RIGHT
DAC
LINEOUTL
LINEREF
LINEOUTR
CHARGE PUMP
WOLFSON MICROELECTRONICS plc
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Production Data, July 2012, Rev 4.0
Copyright
2012
Wolfson Microelectronics plc
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
