ML6420CS-3 MICRO-LINEAR [Micro Linear Corporation], ML6420CS-3 Datasheet - Page 18

• Manufacturer Part Number: ML6420CS-3
• Description: Triple/Dual Phase-Equalized, Low-Pass Video Filter
• Manufacturer: MICRO-LINEAR [Micro Linear Corporation]

ML6420
18
ANALOG IN
0Hz
0
DESIRED PASSBAND
SIGNAL CONTENT
9.3MHz TYP
ML6420
SAMPLING CLOCK
AT OUTPUT
Figure 13. Oversampled Video Processing System with
Figure 14. Digital Filtering in the Frequency Domain
Figure 15. Digital Filtering in the Time Domain
F
0
/2
Analog LPF & Half-Band Digital Filter
DSP FILTER REDUCES
ERRORS FROM F
ADC
TO F
HIGH FREQUENCY ELEMENTS THAT ARE REDUCED IN AMPLITUDE
OUTPUT OF
0
THE ADC
AT THE
AND BROADENED TO COVER MORE THAN 1 PIXEL.
0
/2
ANALOG FILTER REDUCES
ERRORS FROM F
DIGITAL FILTER
HALF-BAND
AT THE INPUT OF
F
0
x2
THE ADC
0
F
TO 2xF
0
CLOCK
0
PROCESSING
ANALOG/DIGITAL COMBO
SIGNAL
YIELDS LOW ALIASING
ERRORS
DAC
2xF
t
0
ANALOG OUT