Absolute Maximum Ratings; Recommended Operating Conditions - Cirrus Logic WM8940 Manual

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.
Cirrus Logic 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.
DBVDD, DCVDD, AVDD, SPKVDD supply voltages
Voltage range digital inputs
Voltage range analogue inputs
Operating temperature range, T
Storage temperature prior to soldering
Storage temperature after soldering
Notes:
1. Analogue and digital grounds must always be within 0.3V of each other.
2. All digital and analogue supplies are completely independent from each other.

RECOMMENDED OPERATING CONDITIONS

PARAMETER
Digital supply range (Core)
Digital supply range (Buffer)
Analogue supplies range
Ground
Notes:
Analogue supply voltages must be ≥ the digital supply voltages
1.
DBVDD must be ≥ DCVDD
2.
8
CONDITION
A
SYMBOL
DCVDD
DBVDD
1
AVDD, SPKVDD
DGND,AGND, SPKGND
MIN
-0.3V
DGND -0.3V
AGND -0.3V
-25C
30C max / 85% RH max
-65C
TEST CONDITIONS MIN
1.71
1.71
2.5
WM8940
MAX
+4.2
DVDD +0.3V
AVDD +0.3V
+85C
+150C
TYP MAX UNIT
3.6 V
3.6 V
3.6 V
0 V
Rev 4.4