WM8959 Wolfson Microelectronics Ltd., WM8959 Datasheet - Page 7
WM8959
Manufacturer Part Number
WM8959
Description
Mobile Multimedia DAC with Dual-mode Class AB/D Speaker Driver
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet
1.WM8959.pdf
(155 pages)
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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.
w
Pre-Production
Digital supply range (Core)
Digital supply range (Buffer)
Analogue supplies range
Speaker supply range
Ground
ABSOLUTE MAXIMUM RATINGS
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.
Supply voltages (excluding SPKVDD)
SPKVDD
Voltage range digital inputs
Voltage range analogue inputs
Operating temperature range, T
Junction temperature, T
Storage temperature after soldering
RECOMMENDED OPERATING CONDITIONS
Notes:
1.
2.
3.
4.
5.
6.
7.
Analogue, digital and speaker grounds must always be within 0.3V of each other.
All digital and analogue supplies are completely independent from each other (i.e. not internally connected).
DCVDD must be less than or equal to AVDD.
DCVDD must be less than or equal to DBVDD.
AVDD must be less than or equal to SPKVDD.
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.
HPVDD must be equal to AVDD
PARAMETER
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.
JMAX
CONDITION
A
DGND, AGND, HPGND,
AVDD, HPVDD
SPKVDD
SPKGND
SYMBOL
DCVDD
DBVDD
1.71
1.71
MIN
2.7
2.7
DGND -0.3V
AGND -0.3V
-40ºC
-40ºC
-65ºC
-0.3V
-0.3V
MIN
TYP
0
MAX
3.6
3.6
3.6
5.5
PP, May 2008, Rev 3.1
DBVDD +0.3V
AVDD +0.3V
+150ºC
+150ºC
+85ºC
+4.5V
MAX
+7V
WM8959
UNIT
V
V
V
V
V
7
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