WM8762

Production Data

w

PD, Rev 4.6, November 2011

11

1)

After reset, ensure that LRCLK and BCLK are provided within 768 MCLK periods

of MCLK starting up

2)

If switching to 192fs or 384fs modes at any time during operation, reset the

WM8762 by recycling the power

DIGITAL FILTER CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Passband Edge

-3dB

0.487fs

Passband Ripple

f < 0.444fs

0.05

dB

Stopband Attenuation

f > 0.555fs

-60

dB

Table 2 Digital Filter Characteristics

DAC FILTER RESPONSES

-120

-100

-80

-60

-40

-20

0

0

0.5

1

1.5

2

2.5

3

Frequency (Fs)

Figure 7 DAC Digital Filter Frequency Response

-44.1, 48 and 96kHz

-0.2

-0.15

-0.1

-0.05

0

0.05

0.1

0.15

0.2

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

Frequency (Fs)

Figure 8 DAC Digital Filter Ripple -44.1, 48 and 96kHz

-80

-60

-40

-20

0

0

0.2

0.4

0.6

0.8

1

Frequency (Fs)

Figure 9 DAC Digital Filter Frequency Response – 192kHz

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

Frequency (Fs)

Figure 10 DAC Digital Filter Ripple –192kHz