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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
WM8533
TABLE OF CONTENTS
Production Data
DESCRIPTION ....................................................................................................... 1
FEATURES ............................................................................................................ 1
APPLICATIONS .................................................................................................... 1
BLOCK DIAGRAM ................................................................................................ 1
TABLE OF CONTENTS......................................................................................... 2
PIN CONFIGURATION .......................................................................................... 3
ORDERING INFORMATION .................................................................................. 3
PIN DESCRIPTION ................................................................................................ 4
ABSOLUTE MAXIMUM RATINGS ........................................................................ 5
RECOMMENDED OPERATING CONDITIONS ..................................................... 5
ELECTRICAL CHARACTERISTICS ..................................................................... 6
TERMINOLOGY ............................................................................................................... 7
TYPICAL PERFORMANCE ................................................................................... 7
TYPICAL POWER CONSUMPTION ................................................................................ 7
SIGNAL TIMING REQUIREMENTS ...................................................................... 8
SYSTEM CLOCK TIMING ................................................................................................ 8
AUDIO INTERFACE TIMING – MASTER MODE ............................................................ 9
AUDIO INTERFACE TIMING – SLAVE MODE .............................................................. 10
CONTROL INTERFACE TIMING – I
2
C MODE .............................................................. 11
CONTROL INTERFACE TIMING – SPI MODE ............................................................. 12
POWER ON RESET ...................................................................................................... 13
DEVICE DESCRIPTION ...................................................................................... 15
INTRODUCTION ............................................................................................................ 15
SOFTWARE CONTROL INTERFACE ........................................................................... 15
DIGITAL AUDIO INTERFACE ........................................................................................ 19
DIGITAL AUDIO INTERFACE CONTROL ..................................................................... 21
DIGITAL AUDIO DATA SAMPLING RATES .................................................................. 23
DAC FEATURES ............................................................................................................ 24
HARDWARE CONTROL INTERFACE .......................................................................... 28
REGISTER MAP .................................................................................................. 30
REGISTER BITS BY ADDRESS .................................................................................... 31
DIGITAL FILTER CHARACTERISTICS .............................................................. 35
TERMINOLOGY ............................................................................................................. 35
DAC FILTER RESPONSES ........................................................................................... 36
DIGITAL DE-EMPHASIS CHARACTERISTICS ............................................................. 37
RECOMMENDED EXTERNAL COMPONENTS ................................................. 38
RECOMMENDED ANALOGUE LOW PASS FILTER .................................................... 39
RELEVANT APPLICATION NOTES .............................................................................. 39
PACKAGE DIMENSIONS .................................................................................... 40
IMPORTANT NOTICE ......................................................................................... 41
ADDRESS ...................................................................................................................... 41
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WM8533
PIN CONFIGURATION
1
A
2
3
4
5
AVDD
LINEOUTR
LINEOUTL
CPVOUTN
CPCB
B
AGND
LINEREF
VMID
LINEGND
CPCA
C
SCLK/
AIFMODE1
SDA/
AIFMODE0
CIFMODE
DACDAT
LINEVDD
D
CS/MUTE
MCLK
BCLK
LRCLK
DBVDD
ORDERING INFORMATION
DEVICE
WM8533ECSN/R
Note:
Reel quantity = 5000
TEMPERATURE
RANGE
-40 to +85 C
o
PACKAGE
20-ball W-CSP
(Pb-free, tape and reel)
MOISTURE
SENSITIVITY LEVEL
MSL1
PEAK SOLDERING
TEMPERATURE
260 C
o
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WM8533
PIN DESCRIPTION
PIN NO
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
NAME
AVDD
LINEOUTR
LINEOUTL
CPVOUTN
CPCB
AGND
LINEREF
VMID
LINEGND
CPCA
TYPE
Supply
Analogue Out
Analogue Out
Analogue Out
Analogue Out
Supply
Analogue Input
Analogue Out
Supply
Analogue Out
Analogue supply
Right line output
Left line output
Charge pump negative rail decoupling pin
Charge pump fly back capacitor pin
Analogue ground
Ground feedback from output jack
Analogue midrail decoupling pin
Charge pump ground
Charge pump fly back capacitor pin
I2C SOFTWARE
MODE
C1
C2
C3
C4
C5
D1
D2
D3
D4
D5
SCLK/
AIFMODE1
SDA/
AIFMODE0
CIFMODE
DACDAT
LINEVDD
CS / MUTE
¯¯ ¯¯¯¯¯
MCLK
BCLK
LRCLK
DBVDD
Digital I/O
2
Production Data
DESCRIPTION
SPI SOFTWARE
MODE
SPI control interface
clock input pin
SPI control interface
data input pin
1 = select SPI control
interface mode
HARDWARE
MODE
AIFMODE [1:0]
00 = 24-bit LJ
01 = 24-bit I2S
10 = 16-bit RJ
11 = 24-bit RJ
Z = select hardware
mode
I C control interface
clock input pin
I C interface data input
pin
0 = select I C control
interface mode
Charge pump supply
I C address select:
0 = 0x34
1 = 0x36
Master clock
2
2
2
Digital I/O
Digital In
Tri-Level
Digital In
Supply
Digital In
Digital In
Digital I/O
Digital I/O
Supply
Digital audio interface data input
SPI control interface
chip select
0 = Mute enabled
1 = Mute disabled
Digital audio interface bit clock
Digital audio interface left/right clock
Digital interface supply (for digital audio and I2C interfaces)
Note:
Tri-level pins which require the ‘Z’ state to be selected should be left floating (open)
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WM8533
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously
operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given
under Electrical Characteristics at the test conditions specified.
ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically
susceptible to damage from excessive static voltages. Proper ESD precautions must be taken during handling
and storage of this device.
Wolfson tests its package types according to IPC/JEDEC J-STD-020B for Moisture Sensitivity to determine acceptable storage
conditions prior to surface mount assembly. These levels are:
MSL1 = unlimited floor life at <30C / 85% Relative Humidity. Not normally stored in moisture barrier bag.
MSL2 = out of bag storage for 1 year at <30C / 60% Relative Humidity. Supplied in moisture barrier bag.
MSL3 = out of bag storage for 168 hours at <30C / 60% Relative Humidity. Supplied in moisture barrier bag.
The Moisture Sensitivity Level for each package type is specified in Ordering Information.
CONDITION
AVDD, LINEVDD, DBVDD
Voltage range digital inputs
Voltage range analogue inputs
Temperature range, T
A
Storage temperature after soldering
MIN
-0.3V
AGND -0.3V
AGND -0.3V
-40°C
-65°C
MAX
+4.5V
DBVDD +0.3V
AVDD +0.3V
+85°C
+150°C
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Analogue supply range
Digital buffer supply range
Ground
Notes
1.
2.
Analogue grounds must always be within 0.3V of each other.
LINEVDD and AVDD must always be within 0.3V of each other.
SYMBOL
AVDD, LINEVDD
DBVDD
AGND, LINEGND
TEST CONDITIONS
MIN
2.97
1.62
0
TYP
3.3
MAX
3.63
3.63
UNIT
V
V
V
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