AD725 查看數據表（PDF） - Analog Devices

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产品描述 (功能)

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AD725

Low Cost RGB to NTSC/PAL Encoder with Luma Trap Port

Analog Devices 

Typical Characteristics–AD725

FSC

(3.579545MHz

OR

4.433618MHz)

OSCILLATOR

TEKTRONIX

COMPOSITE

SYNC

TG2000

SIGNAL

GENERATION

PLATFORM

RGB

3

75⍀

GENLOCK

+5V

AD725

RGB TO

NTSC/PAL

ENCODER

4FSC

FSC

HP3314A

؋ 4 PLL

COMPOSITE

VIDEO

SONY

MONITOR

MODEL

PVM-1354Q

75⍀

TEKTRONIX

VM700A

WAVEFORM

MONITOR

Figure 2. Evaluation Setup

1.0

APL = 50.8%

525 LINE NTSC NO FILTERING

SLOW CLAMP TO 0.00V @ 6.63␮s

1.0

APL = 50.6%

625 LINE PAL NO FILTERING

SLOW CLAMP TO 0.00V @ 6.72␮s

100

0.5

0.5

50

0.0

0

0.0

–50

–0.5

0

10

20

30

40

50

60

µs

Figure 3. 100% Color Bars, NTSC

–0.5

0

10

20

30

40

50

60

␮s

Figure 5. 100% Color Bars, PAL

Figure 4. 100% Color Bars on Vector Scope, NTSC

Figure 6. 100% Color Bars on Vector Scope, PAL

REV. 0

–5–

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