WM8940GEFL Просмотр технического описания (PDF) - Wolfson Microelectronics plc

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производитель

WM8940GEFL

Mono CODEC with Speaker Driver

Wolfson Microelectronics plc 

Pre-Production

WM8940

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

DBVDD, DCVDD, AVDD, SPKVDD supply voltages

Voltage range digital inputs

Voltage range analogue inputs

Operating temperature range, TA

Storage temperature prior to soldering

Storage temperature after soldering

MIN

MAX

-0.3V

+4.2

DGND -0.3V

DVDD +0.3V

AGND -0.3V

AVDD +0.3V

-25°C

+85°C

30°C max / 85% RH max

-65°C

+150°C

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

SYMBOL

DCVDD

DBVDD

AVDD, SPKVDD1

DGND,AGND, SPKGND

TEST CONDITIONS

MIN

1.71

1.71

2.5

Notes

1. Analogue supply voltages must not be less than the digital supply voltages

2. DBVDD should not be < DCVDD

TYP

MAX

UNIT

3.6

V

3.6

V

3.6

V

0

V

w

Pre-Production, Rev 3.0, February 2007

7

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