WM8991 Datasheet, PDF (8/174 Pages) Wolfson Microelectronics plc – Mobile Multimedia CODEC with Dual-Mode Class AB/D Speaker Driver

WM8991
Pre-Production
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
Supply voltages (excluding SPKVDD)
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
DGND -0.3V
AGND -0.3V
-40ºC
-40ºC
-65ºC
MAX
+4.5V
+7V
DBVDD +0.3V
AVDD +0.3V
+85ºC
+150ºC
+150ºC
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Digital supply range (Core)
Digital supply range (Buffer)
Analogue supplies range
SYMBOL
DCVDD
DBVDD
AVDD, HPVDD
MIN
TYP
MAX
UNIT
1.71
3.6
V
1.71
3.6
V
2.7
3.6
V
Speaker supply range
SPKVDD
2.7
5.5
V
Ground
DGND, AGND, HPGND,
0
V
SPKGND
Notes
1. Analogue, digital and speaker grounds must always be within 0.3V of each other.
2. All digital and analogue supplies are completely independent from each other (i.e. not internally connected).
3. DCVDD must be less than or equal to AVDD.
4. DCVDD must be less than or equal to DBVDD.
5. AVDD must be less than or equal to SPKVDD.
6. SPKVDD must be high enough to support the peak output voltage when using DCGAIN and ACGAIN functions, to
avoid output waveform clipping. Peak output voltage is AVDD*(DCGAIN+ACGAIN)/2.
7. HPVDD must be equal to AVDD
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PP, May 2008, Rev 3.1
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