WM2002

Product Brief

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Product Brief, September 2013, Rev 4.1

6

RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

DC Boost converter input

(see Note 5)

BATTVDD

0.9

1.6

V

Digital buffer supply

DBVDD

1.4

2.5

V

MICBIAS supply

(see Note 4)

MICVDD

2.3

2.8

3.6

V

Digital core supply (LDO1)

LDO1VDD

1.2

3.3

V

System supply

(LDO2, LDO3 and LDO4)

SYSVDD

2.1

2.1

3.3

V

OTP Memory programming

supply (see Note 3)

PROGVDD

6.25

6.5

6.75

V

Ground

DGND, AGND, CPGND,

HPGND

0

V

Notes:

1.

Analogue and digital 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.

The OTP Memory programming supply (PROGVDD) should only be present when programming the OTP. At other

times, this pin should be tied to DGND.

4.

MICVDD must be at least 300mV higher than the selected MICBIAS output voltage.

5.

When the Charge Pump is enabled, the maximum BATTVDD voltage will depend on the programmable voltage

DC1VOUT. The combined voltage BATTVDD + DC1VOUT must not exceed 3.6V.

TYPICAL APPLICATIONS

A typical application circuit is illustrated in Figure 1, showing the line inputs, ANC microphone inputs,

and stereo headphone output.

Figure 1 Typical Application