XWM8739LEFL 查看數據表（PDF） - Wolfson Microelectronics plc

零件编号

产品描述 (功能)

生产厂家

XWM8739LEFL

Stereo Audio ADC

Wolfson Microelectronics plc 

WM8739 / WM8739L

Advanced Information

0.02

0

0.01

-20

0

-0.01

-40

-0.02

-60

-0.03

-0.04

-80

-0.05

-100

0

0.5

1

1.5

2

2.5

3

Frequency (Fs)

-0.06

0

0.05

0.1

0.15

0.2

0.25

Frequency (Fs)

Figure 27 ADC Digital Filter Frequency Response –Type 3 Figure 28 ADC Digital Filter Ripple –Type 3

ADC HIGH PASS FILTER

The WM8739 has a selectable digital high pass filter to remove DC offsets. The filter response is

characterised by the following polynomial.

H(z) = 1 – z-1

1 – 0.9995 z-1

AI Rev 2.2 September 2001

31

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