Production Data

WM8782

w

PD, August 2006, Rev 4.2

5

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

Digital supply voltage

-0.3V

+4.5V

Analogue 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

Ambient temperature (supplies applied)

-55

°C

+125

°C

Storage temperature

-65

°C

+150

°C

Pb free package body temperature (reflow 10 seconds)

+260

°C

Package body temperature (soldering 2 minutes)

+183

°C

Notes

1.

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

THERMAL PERFORMANCE

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SSOP-20 package

Thermal resistance – junction to

ambient

81

See note 1

°C/W

TSSOP-20 package

Thermal resistance – junction to

ambient

72

See note 1

°C/W

Notes

1.

Figure given for package mounted on 4-layer FR4 according to JESD51-7. (No forced air flow is assumed).

2.

Thermal performance figures are estimated.

RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Digital supply range

DVDD

2.7

3.6

V

Analogue supply range

AVDD

2.7

5.5

V

Ground

DGND,AGND

0

V

Operating temperature range

-25

+85

°C

Notes

1.

Digital supply DVDD must never be more than 0.3V greater than AVDD.