WM9712L
ABSOLUTE MAXIMUM RATINGS
Production Data
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.
Note:
The TQFP version is classified as MSL1 and does not require to be drybagged but will be supplied as such, labelled as MSL1.
CONDITION
Digital supply voltages (DCVDD, DBVDD)
Analogue supply voltages (AVDD, HPVDD, SPKVDD, TPVDD)
Touchpanel supply voltage (TPVDD)
Voltage range digital inputs
Voltage range analogue inputs
Voltage range touchpanel Inputs X+, X-, Y+ and Y-
Voltage range touchpanel Inputs X+, X-, Y+ and Y-
Voltage range, BMON/AUX3 (pin31)
Operating temperature range, T
A
Storage temperature (TQFP package only)
Lead temperature (soldering 10 seconds)
Lead temperature (soldering 2 minutes)
-25 C
-65
o
C
o
MIN
-0.3V
-0.3V
AVDD -0.3V
DGND -0.3V
AGND -0.3V
MAX
+3.63V
+3.63V
AVDD +0.3V
DBVDD +0.3V
AVDD +0.3V
TPVDD +0.3V
AVDD +0.3V
+5V
+85
o
C
+150
o
C
+240
o
C
+183
o
C
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Digital input/output buffer
supply range
Digital core supply range
Analogue supply range
Digital ground
Analogue ground
Difference AGND to DGND
Notes:
1.
2.
3.
AVDD, DCVDD and DBVDD can all be different
Digital supplies (DCVDD, DBVDD) must not exceed analogue supplies (AVDD, HPVDD, SPKVDD, TPVDD) by more
than 0.3V
AGND is normally the same as DGND
SYMBOL
DBVDD
DCVDD
AVDD, HPVDD,
SPKVDD, TPVDD
DCGND, DBGND
AGND, HPGND,
SPKGND, TPGND
Note 3
-0.3
TEST CONDITIONS
Notes 1, 2
Notes 1, 2
MIN
1.8
1.8
1.8
TYP
3.3
3.3
3.3
0
0
0
+0.3
MAX
3.6 or
AVDD+0.3
3.6 or
AVDD+0.3
3.6
UNIT
V
V
V
V
V
V
w
PD Rev 4.0 December 2003
6
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
