ML6420 Ver la hoja de datos (PDF) - Micro Linear Corporation

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ML6420

Triple/Dual Phase-Equalized, Low-Pass Video Filter

Micro Linear Corporation 

ML6420

ANALOG IN

ADC

SIGNAL

PROCESSING

DAC

ANALOG OUT

Fs CLOCK

Figure 10. Simplified Digital Video Processing System

DESIRED PASSBAND

SIGNAL CONTENT

DISTORTION FROM

“FOLDED” FREQUENCIES

SIGNAL CONTENT AT

FREQUENCIES > Fs/2

0Hz

Fs/2

Fs

Figure 11. Aliasing in the Frequency Domain

TYPICAL SAMPLING

CLOCK

HIGH FREQUENCY

ELEMENTS THAT

ARE “ON” THE

CLOCK WILL BE

SAMPLED 100%

ELEMENTS THAT

ARE “OFF” THE

CLOCK WILL

BE MISSED

0

t

Figure 12. Aliasing in the Time Domain

17

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