ML6420CS-7 View Datasheet(PDF) - Micro Linear Corporation
Part Name
Description
MFG CO.
'ML6420CS-7' PDF : 20 Pages View PDF
ML6420
ANALOG IN
ML6420
9.3MHz TYP
ADC
DIGITAL FILTER
HALF-BAND
SIGNAL
PROCESSING
x2
F0 CLOCK
DAC
Figure 13. Oversampled Video Processing System with
Analog LPF & Half-Band Digital Filter
ANALOG OUT
DESIRED PASSBAND
SIGNAL CONTENT
ANALOG FILTER REDUCES
ERRORS FROM F0 TO 2xF0
AT THE INPUT OF
DSP FILTER REDUCES
THE ADC
ANALOG/DIGITAL COMBO
ERRORS FROM F0/2
TO F0 AT THE
YIELDS LOW ALIASING
ERRORS
OUTPUT OF
THE ADC
0Hz
F0/2
F0
2xF0
Figure 14. Digital Filtering in the Frequency Domain
SAMPLING CLOCK
AT OUTPUT
HIGH FREQUENCY ELEMENTS THAT ARE REDUCED IN AMPLITUDE
AND BROADENED TO COVER MORE THAN 1 PIXEL.
0
t
Figure 15. Digital Filtering in the Time Domain
18
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