Production Data
WM8782
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
+4.5V
Digital supply voltage
Analogue supply voltage
Voltage range digital inputs
Voltage range analogue inputs
-0.3V
+7V
DGND -0.3V
AGND -0.3V
-55°C
DVDD + 0.3V
AVDD +0.3V
+125°C
Ambient temperature (supplies applied)
Storage temperature
-65°C
+150°C
Pb free package body temperature (reflow 10 seconds)
Package body temperature (soldering 2 minutes)
Notes
+260°C
+183°C
1. Analogue and digital grounds must always be within 0.3V of each other.
THERMAL PERFORMANCE
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SSOP-20 package
°C/W
°C/W
Thermal resistance – junction to
ambient
81
RθJA
See note 1
TSSOP-20 package
Thermal resistance – junction to
ambient
72
RθJA
See note 1
Notes
1. Figure given for package mounted on 4-layer FR4 according to JESD51-7. (No forced air flow is assumed).
2. Thermal performance figures are estimated.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
DVDD
TEST CONDITIONS
MIN
2.7
TYP
MAX
3.6
UNIT
V
Digital supply range
Analogue supply range
Ground
AVDD
2.7
5.5
V
DGND,AGND
TA
0
V
Operating temperature range
Notes
-25
+85
°C
1. Digital supply DVDD must never be more than 0.3V greater than AVDD.
PD, August 2006, Rev 4.2
5
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
