Production Data

WM9001

w

PD, March 2010, Rev 4.1

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

AVDD

-0.3V

+4.5V

SPKVDD

-0.3V

+7V

Digital Inputs voltage range

AGND -0.3V

AVDD +0.3V

Analogue Inputs voltage range

AGND -0.3V

AVDD +0.3V

-40ºC

+85ºC

-40ºC

+150ºC

Storage temperature after soldering

-65ºC

+150ºC

RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

Analogue supply

AVDD

2.7

3.6

V

Speaker supply

SPKVDD

2.7

5.5

V

Ground

AGND, SPKGND

0

V

Notes:

1.

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

2.

All supplies are completely independent from each other (i.e. not internally connected).

3.

AVDD must be less than or equal to SPKVDD.

4.

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.

5.

The EN and SYNC pins are compatible with low voltage (eg. 1.8v) logic levels from external devices, and can accept

logic 1 digital inputs as low as 1.6V, even though the WM9001 AVDD supply minimum is 2.7V. This provides

compatibility with a low voltage DVDD on a controlling device such as the WM8991 CODEC.