WM8912 データシートの表示（PDF） - Cirrus Logic

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WM8912

Ultra Low Power DAC with Headphone Driver for Portable Audio Applications

Cirrus Logic 

WM8912

Production Data

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-020 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

AVDD, DCVDD

DBVDD,

-0.3V

-0.3V

+2.5V

+4.5V

CPVDD

HPOUTL, HPOUTR, LINEOUTL, LINEOUTR

-0.3V

(CPVDD + 0.3V) * -1

+2.2V

CPVDD + 0.3V

Voltage range digital inputs

DGND -0.3V

DBVDD +0.3V

Voltage range analogue inputs

Temperature range, TA

Storage temperature after soldering

AGND -0.3V

-40C

-65C

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; there is no restriction on power supply

sequencing.

3. HPOUTL, HPOUTR, LINEOUTL, LINEOUTR are outputs, and should not normally become connected to DC levels.

However, if the limits above are exceeded, then damage to the WM8912 may occur.

RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

Digital supply range (Core)

DCVDD

0.95

1.0

1.98

V

Digital supply range (Buffer)

DBVDD

1.42

1.8

3.6

V

Analogue supplies range

AVDD

1.71

1.8

2.0

V

Charge pump supply range

CPVDD

1.71

1.8

2.0

V

Ground

DGND, AGND, CPGND

0

V

Operating Temperature (ambient)

TA

-40

+25

+85

C

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PD, Rev 4.1, February 2013

8

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