WM8783 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

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WM8783

Stereo Low Power 96kHz ADC

Wolfson Microelectronics plc 

WM8783

DIGITAL FILTER CHARACTERISTICS

PARAMETER

Passband

Passband Ripple

Stopband

Stopband Attenuation

Group Delay

TEST CONDITIONS

+/- 0.1dB

-6dB

f > 0.546 fs

MIN

0

0.546s

-60

TYP

0.5fs

MAX

0.454 fs

+/- 0.1

16.5 / fs

Production Data

UNIT

dB

dB

s

TERMINOLOGY

1. Stop Band Attenuation (dB) – the degree to which the frequency spectrum is attenuated (outside audio band)

2. Pass-band Ripple – any variation of the frequency response in the pass-band region

ADC FILTER RESPONSE

20

-2.2m

-20

-40.01

-60.01

-80.01

-100

-120

-140

-160

-180

-200

0

MAGNITUDE(dB)

17.64k

35.28k

52.92k

70.56k

88.2k

105.8k

123.5k

141.1k

158.8k

176.4k

Figure 6 ADC Frequency Response up to 4 x fs (Sample rate, fs = 48kHz)

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PD, August 2010, Rev 4.0

12

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