wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 9

• Manufacturer Part Number: wm8918
• Description: Ultra Low Power Dac For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

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.
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.
AVDD, DCVDD
DBVDD
MICVDD
CPVDD
HPOUTL, HPOUTR, LINEOUTL, LINEOUTR
Voltage range digital inputs
Voltage range analogue inputs
Temperature range, T
Storage temperature after soldering
Notes:
1.
2.
3.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Digital supply range (Core)
Digital supply range (Buffer)
Analogue supplies range
Charge pump supply range
Microphone bias
Ground
Operating Temperature (ambient)
w
Analogue and digital grounds must always be within 0.3V of each other.
All digital and analogue supplies are completely independent from each other; there is no restriction on power supply
sequencing.
HPOUTL, HPOUTR, LINEOUTL, LINEOUTR are outputs, and should not normally become connected to DC levels.
However, if the limits above are exceeded, then damage to the WM8918 may occur.
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.
A
CONDITION
DGND, AGND, CPGND
SYMBOL
MICVDD
DCVDD
DBVDD
CPVDD
AVDD
T
A
0.95
1.42
1.71
1.71
1.71
MIN
-40
(CPVDD + 0.3V) * -1
DGND -0.3V
AGND -0.3V
-40°C
-65°C
-0.3V
-0.3V
-0.3V
-0.3V
MIN
TYP
+25
1.0
1.8
1.8
1.8
2.5
0
PD, Rev 4.0, September 2010
MAX
1.98
+85
3.6
2.0
2.0
3.6
CPVDD + 0.3V
DBVDD +0.3V
AVDD +0.3V
+150°C
+85°C
+2.5V
+4.5V
+4.5V
+2.2V
MAX
WM8918
UNIT
°C
V
V
V
V
V
V
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