WM8731SEDSSLASHV datasheet(6/65 Pages) WOLFSON

6 / 65 page

WM8731 / WM8731L

Production Data

PD, Rev 4.9, October 2012

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-020 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.

CONDITION

MIN

MAX

Digital supply voltage

-0.3V

+3.63V

Analogue supply voltage

-0.3V

+3.63V

Voltage range digital inputs

DGND -0.3V

DVDD +0.3V

Voltage range analogue inputs

AGND -0.3V

AVDD +0.3V

Operating temperature range, TA

-40

C

+85

C

Storage temperature after soldering

-65

C

+150

C

Notes:

Analogue and digital grounds must always be within 0.3V of each other.

The digital supply core voltage (DCVDD) must always be less than or equal to the analogue supply voltage (AVDD)

RECOMMENDED OPERATING CONDITIONS – WM8731

PARAMETER

SYMBOL

TEST

CONDITIONS

MIN

TYP

MAX

UNIT

Digital supply range (Core)

DCVDD

1.42

3.6

Digital supply range (Buffer)

DBVDD

2.7

3.6

Analogue supply range

AVDD, HPVDD

2.7

3.6

Ground

DGND,AGND,HPGND

Notes:

DCVDD must be lower than or equal to DBVDD.

USB Mode should not be used with DCVDD lower than 2V

RECOMMENDED OPERATING CONDITIONS – WM8731L

PARAMETER

SYMBOL

TEST

CONDITIONS

MIN

TYP

MAX

UNIT

Digital supply range (Core)

DCVDD

1.42

3.6

Digital supply range (Buffer)

DBVDD

1.8

3.6

Analogue supply range

AVDD, HPVDD

1.8

3.6

Ground

DGND,AGND,HPGND

Notes:

If DBVDD is lower than 2.5V, DCVDD must be at least 0.225V lower than DBVDD.

If DBVDD is higher than or equal to 2.5V, DCVDD must be lower than or equal to DBVDD.

USB Mode should not be used with DCVDD lower than 2V

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