WM9709

Production Data

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PD Rev 1.3 February 2003

8

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

BITCLK rise time

2

6

ns

BITCLK fall time

2

6

ns

SYNC rise time

2

6

ns

SYNC fall time

2

6

ns

SDATAIN rise time

2

6

ns

SDATAIN fall time

2

6

ns

SDATAOUT rise time

2

6

ns

SDATAOUT fall time

2

6

ns

DIGITAL FILTER RESPONSE

The WM9709 digital filter response is guaranteed by design but is not tested in production.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Passband

±0.05 dB

0.444fs

dB

Stopband

-3dB

0.487fs

Passband ripple

±0.05

dB

Stopband Attenuation

f > 0.555fs

-60

dB

TERMINOLOGY

1.

Stop band attenuation (dB) - Is the degree to which the frequency spectrum is attenuated (outside the audio band).

2.

Pass-Band Ripple - Any variation of the frequency response in the pass-band region.

-120

-100

-80

-60

-40

-20

0

0

0.5

1

1.5

2

2.5

3

Frequency (Fs)

-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 6 Digital Filter Frequency Response – 48kHz

Figure 7 Digital Filter Ripple – 48kHz