WM8945 데이터 시트보기 (PDF) - Wolfson Microelectronics plc
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WM8945 Datasheet PDF : 169 Pages
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WM8945
Production Data
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 <30C / 85% Relative Humidity. Not normally stored in moisture barrier bag.
MSL2 = out of bag storage for 1 year at <30C / 60% Relative Humidity. Supplied in moisture barrier bag.
MSL3 = out of bag storage for 168 hours at <30C / 60% Relative Humidity. Supplied in moisture barrier bag.
The Moisture Sensitivity Level for each package type is specified in Ordering Information.
CONDITION
Supply voltages (DCVDD)
Supply voltages (LDOVDD, DBVDD, SPKVDD)
Voltage range digital inputs
Voltage range analogue inputs
Operating temperature range, TA
Junction temperature, TJMAX
Storage temperature after soldering
MIN
-0.3V
-0.3V
-0.7V
-0.7V
-40ºC
-40ºC
-65ºC
MAX
2.5V
4.5V
DBVDD +0.7V
LDOVDD +0.7V
+85ºC
+150ºC
+150ºC
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Digital supply range (Core)
Digital supply range (I/O)
Analogue supply
Speaker supply range
Ground
SYMBOL
DCVDD
DBVDD
LDOVDD
SPKVDD
GND
MIN
1.62
1.71
2.4
1.71
Note:
To ensure pop-free device start-up, LDOVDD must be enabled before SPKVDD
TYP
MAX
UNIT
1.8
1.98
V
3.3
3.6
V
3.3
3.6
V
3.3
3.6
V
0
V
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PD, May 2011, Rev 4.1
8
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