WM8941 datasheet(88/96 Pages) WOLFSON

tên linh kiện	WM8941

Giải thích chi tiết về linh kiện	Mono CODEC with Speaker Driver and Video Buffer

PDF	96 Pages

Scroll/Zoom	100%

nhà sản xuất	WOLFSON [Wolfson Microelectronics plc]

Trang chủ	http://www.wolfsonmicro.com

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88 / 96 page

WM8941

Pre Production

PP, Rev 3.3, December 2007

DIGITAL FILTER CHARACTERISTICS

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ADC Filter

+/- 0.025dB

0.454fs

Passband

-6dB

0.5fs

Passband Ripple

+/- 0.025

Stopband

0.546fs

Stopband Attenuation

f > 0.546fs

-60

Group Delay

21/fs

ADC High Pass Filter

-3dB

3.7

-0.5dB

10.4

High Pass Filter Corner

Frequency

-0.1dB

21.6

DAC Filter

+/- 0.035dB

0.454fs

Passband

-6dB

0.5fs

Passband Ripple

+/-0.035

Stopband

0.546fs

Stopband Attenuation

f > 0.546fs

-55

Group Delay

29/fs

Table 62 Digital Filter Characteristics

TERMINOLOGY

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

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

Note that this delay applies only to the filters and does not include additional delays through other digital circuits. See

Table 63 for the total delay.

PARAMETER

MIN

TYP

MAX

UNIT

Total Delay (ADC analogue

input to digital audio interface

output)

28/fs

30/fs

32/fs

Total Delay (Audio interface

input to DAC analogue

output)

33/fs

35/fs

37/fs

Table 63 Total Group Delay

Notes

Wind noise filter is disabled.

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