WM8961
Pre-Production
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 <30°C / 85% Relative Humidity. Not normally stored in moisture barrier bag.
MSL2 = out of bag storage for 1 year at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag.
MSL3 = out of bag storage for 168 hours at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag.
The Moisture Sensitivity Level for each package type is specified in Ordering Information.
CONDITION
MIN
-0.3V
MAX
+2.5V
DVDD and AVDD
MICVDD
-0.3V
+4.5V
SPKVDD1, SPKVDD2
CPVDD
-0.3V
+7.0V
-0.3V
+2.2V
Voltage range digital inputs
Voltage range analogue inputs
DGND -0.3V
AGND -0.3V
-CPVDD-0.3V
-40°C
DVDD +0.3V
AVDD +0.3V
+CPVDD+0.3V
+85°C
Voltage range analogue outputs (HP_L, HP_R)
Temperature Range, TA
Storage temperature after soldering
Notes
-65°C
+150°C
1. Analogue, digital and speaker grounds must always be within 0.3V of each other.
2. All digital and analogue supplies are completely independent from each other (i.e. not internally connected).
3. DVDD must be less than or equal to AVDD.
4. AVDD must be less than or equal to MICVDD.
5. AVDD must be less than or equal to SPKVDD1 and SPKVDD2.
6. SPKVDD1 and SPKVDD2 must be high enough to support the peak output voltage when using ACGAIN function, to avoid
output waveform clipping. See the “Speaker Output Boost Control” section.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
MIN
1.62
1.71
1.71
1.71
TYP
1.8V
2.5V
1.8V
1.8V
MAX
2.0
UNIT
Digital supply range
DVDD
V
V
V
V
Microphone bias supply range
Analogue supplies range
MICVDD
AVDD
3.6
2.0
Charge pump supply range (1.8V
supply operation)
CPVDD
2.0
Speaker supply range
Ground
SPKVDD1, SPKVDD2
2.7
-40
5.0
0
5.5
V
V
DGND, AGND, CPGND,
SPKGND1, SPKGND2
Operating Temperature
+25
+85
°C
PP, August 2009, Rev 3.1
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
