WM8778 datasheet(45/50 Pages) WOLFSON

Nome de Peças	WM8778

Descrição Electrónicos	24 BIT 192KHZ STEREO CODEC

PDF	50 Pages

Scroll/Zoom	100%

Fabricante Electrônico	WOLFSON [Wolfson Microelectronics plc]

Página de início	http://www.wolfsonmicro.com

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WM8778

PP Rev 1.7 June 2004

DIGITAL FILTER CHARACTERISTICS

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ADC Filter

±0.01 dB

0.4535fs

Passband

-6dB

0.5fs

Passband ripple

±0.01

Stopband

0.5465fs

Stopband Attenuation

f > 0.5465fs

-65

Group Delay

DAC Filter

±0.05 dB

0.454fs

Passband

-3dB

0.4892 fs

Passband ripple

±0.05

Stopband

0.546fs

Stopband Attenuation

f > 0.546fs

-60

Group Delay

Table 15 Digital Filter Characteristics

DAC FILTER RESPONSES

-120

-100

-80

-60

-40

-20

0.5

1.5

2.5

Frequency (Fs)

Figure 25 DAC Digital Filter Frequency Response – 44.1, 48

and 96kHz

-0.2

-0.15

-0.1

-0.05

0.05

0.1

0.15

0.2

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

Frequency (Fs)

Figure 26 DAC Digital Filter Ripple – 44.1, 48 and 96kHz

-80

-60

-40

-20

0.2

0.4

0.6

0.8

Frequency (Fs)

Figure 27 DAC Digital Filter Frequency Response – 192kHz

-1

-0.8

-0.6

-0.4

-0.2

0.2

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

Frequency (Fs)

Figure 28 DAC Digital filter Ripple - 192kHz

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