WM8959 datasheet(7/155 Pages) WOLFSON

7 / 155 page

Pre-Production

WM8959

PP, May 2008, Rev 3.1

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

Supply voltages (excluding SPKVDD)

-0.3V

+4.5V

SPKVDD

-0.3V

+7V

Voltage range digital inputs

DGND -0.3V

DBVDD +0.3V

Voltage range analogue inputs

AGND -0.3V

AVDD +0.3V

Operating temperature range, TA

-40ºC

+85ºC

Junction temperature, TJMAX

-40ºC

+150ºC

Storage temperature after soldering

-65ºC

+150ºC

RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

Digital supply range (Core)

DCVDD

1.71

3.6

Digital supply range (Buffer)

DBVDD

1.71

3.6

Analogue supplies range

AVDD, HPVDD

2.7

3.6

Speaker supply range

SPKVDD

2.7

5.5

Ground

DGND, AGND, HPGND,

SPKGND

Notes:

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

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