WM8978GEFLSLASHV datasheet(5/78 Pages) WOLFSON

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WM8978

PP Rev 1.7 January 2005

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

MIN

MAX

DBVDD, DCVDD, AVDD supply voltages

-0.3V

+3.63V

SPKVDD supply voltage

-0.3V

+7V

Voltage range digital inputs

DGND -0.3V

DVDD +0.3V

Voltage range analogue inputs

AGND -0.3V

AVDD +0.3V

Storage temperature prior to soldering

°C max / 85% RH max

Storage temperature after soldering

-65

°C

+150

°C

Notes

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

All digital and analogue supplies are completely independent from each other.

RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

TEST

CONDITIONS

MIN

TYP

MAX

UNIT

Digital supply range (Core)

DCVDD

1.62

3.6

Digital supply range (Buffer)

DBVDD

1.8

3.6

Analogue core supply range

AVDD

2.5

3.6

Analogue output supply range

SPKVDD

2.5

5.5

Ground

DGND,AGND, SPKGND

WM8978GEFL/V Datasheet(PDF) 5 Page - Wolfson Microelectronics plc

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