Production Data
WM8721 / WM8721L
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
+3.63V
Digital supply voltage
Analogue supply voltage
-0.3V
+3.63V
Voltage range digital inputs
Voltage range analogue inputs
Operating temperature range, TA
Storage temperature prior to soldering
Storage temperature after soldering
DGND -0.3V
AGND -0.3V
-25°C
DVDD +0.3V
AVDD +0.3V
+85°C
30°C max / 85% RH max
-65°C
+150°C
Notes:
1. Analogue and digital grounds must always be within 0.3V of each other.
2. The digital supply core voltage (DCVDD) must always be less than or equal to the analogue supply voltage (AVDD).
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Digital supply range (Core)
Digital supply range (Buffer)
Analogue supply range
Ground
DCVDD
DBVDD
1.42
2.7
1.5
3.3
3.3
0
3.6
3.6
3.6
V
V
V
V
AVDD, HPVDD
DGND, AGND, HPGND
2.7
PD Rev 4.0 November 2004
5
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
