WM8976 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

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WM8976

Stereo CODEC With Speaker Driver

Wolfson Microelectronics plc 

WM8976

Pre-Production

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 supply voltages

SPKVDD supply voltage

Voltage range digital inputs

Voltage range analogue inputs

Operating temperature range, TA

Storage temperature after soldering

MIN

-0.3V

-0.3V

DGND -0.3V

AGND -0.3V

-25°C

-65°C

MAX

+4.5V

+7V

DVDD +0.3V

AVDD +0.3V

+85°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, i.e. not internally connected.

3. Analogue supply has to be ≥ to digital.

4. In non-boosted mode, SPKVDD should = AVDD, if boosted SPKVDD should be ≥ 1.5x AVDD.

5. When using PLL, DCVDD should be ≥ 1.9V.

6. DBVDD must be greater than or equal to DCVDD.

RECOMMENDED OPERATING CONDITIONS

PARAMETER

Digital supply range (Core)

Digital supply range (Buffer)

Analogue core supply range

Analogue output supply range

Ground

SYMBOL

DCVDD

DBVDD

AVDD

SPKVDD

DGND, AGND,

SPKGND

TEST

MIN

TYP

MAX

UNIT

CONDITIONS

1.711

3.6

V

1.71

3.6

V

2.5

3.6

V

2.5

5.5

V

0

V

Notes

1. When using the PLL, DCVDD must not be less than 1.9V.

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PP Rev 3.0 April 2006

6

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