WM8976
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
DBVDD, DCVDD, AVDD supply voltages
SPKVDD supply voltage
MIN
-0.3V
MAX
+4.5V
-0.3V
+7V
Voltage range digital inputs
DGND -0.3V
AGND -0.3V
-25°C
DVDD +0.3V
AVDD +0.3V
+85°C
Voltage range analogue inputs
Operating temperature range, TA
Storage temperature after soldering
Notes
-65°C
+150°C
1. Analogue and digital 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. Analogue supply has to be ≥ to digital.
4. In non-boosted mode, SPKVDD should = AVDD, if boosted SPKVDD should be ≥ 1.5x AVDD.
5. When using PLL, DCVDD should be ≥ 1.9V.
6. DBVDD must be greater than or equal to DCVDD.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
TEST
MIN
TYP
MAX
UNIT
CONDITIONS
Digital supply range (Core)
Digital supply range (Buffer)
Analogue core supply range
Analogue output supply range
Ground
DCVDD
DBVDD
1.711
1.71
2.5
3.6
3.6
3.6
5.5
V
V
V
V
V
AVDD
SPKVDD
DGND, AGND,
SPKGND
2.5
0
Notes
1. When using the PLL, DCVDD must not be less than 1.9V.
PP Rev 3.0 April 2006
6
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
