參數(shù)資料
型號(hào): ML6420
廠商: Fairchild Semiconductor Corporation
英文描述: Triple/Dual Phase-Equalized, Low-Pass Video Filter(三/雙相補(bǔ)償視頻低通濾波器)
中文描述: 三/雙相均衡,低通視頻濾波器(三/雙相補(bǔ)償視頻低通濾波器)
文件頁(yè)數(shù): 18/20頁(yè)
文件大小: 271K
代理商: ML6420
ML6420
18
ANALOG IN
ADC
DIGITAL FILTER
HALF-BAND
ANALOG OUT
DAC
F
0
CLOCK
x2
Figure 13. Oversampled Video Processing System with
Analog LPF & Half-Band Digital Filter
Figure 14. Digital Filtering in the Frequency Domain
Figure 15. Digital Filtering in the Time Domain
0Hz
F
0
F
0
/2
2xF
0
0
t
DESIRED PASSBAND
SIGNAL CONTENT
ANALOG/DIGITAL COMBO
YIELDS LOW ALIASING
ERRORS
ANALOG FILTER REDUCES
ERRORS FROM F
0
TO 2xF
0
AT THE INPUT OF
THE ADC
SAMPLING CLOCK
AT OUTPUT
HIGH FREQUENCY ELEMENTS THAT ARE REDUCED IN AMPLITUDE
AND BROADENED TO COVER MORE THAN 1 PIXEL.
ML6420
9.3MHz TYP
SIGNAL
PROCESSING
DSP FILTER REDUCES
ERRORS FROM F
0
/2
TO F
0
AT THE
OUTPUT OF
THE ADC
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