AD723 查看數據表（PDF） - Analog Devices

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AD723

2.7 V to 5.5 V RGB-to-NTSC/PAL Encoder with Load Detect and Input Termination Switch

Analog Devices 

Typical Performance Characteristics–AD723

FSC

(3.579545MHz

OR

4.433618MHz)

OSCILLATOR

TEKTRONIX

TG2000

COMPOSITE

SYNC

SIGNAL

GENERATION

PLATFORM

RGB

3

75⍀

GENLOCK

3V

AD723

RGB-TO-

NTSC/PAL

ENCODER

4FSC

FSC

HP3314A

؋ 4 PLL

COMPOSITE

VIDEO

SONY

MONITOR

MODEL

PVM-1354Q

75⍀

TEKTRONIX

VM700A

WAVEFORM

MONITOR

TPC 1. Evaluation Setup

1.0

1.0

100

0.5

0.5

50

0.0

–0.5

0

APL = 51.2%

525 LINE NTSC NO FILTERING

SLOW CLAMP TO 0.0V @ 6.63␮s

10

20

30

40

50

µs

TPC 2. 100% Color Bars, NTSC

0

–50

60

0.0

APL = 51.2%

625 LINE PAL NO FILTERING

SLOW CLAMP TO 0.00V @ 6.72␮s

–0.5

0

10

20

30

40

50

60

␮s

TPC 4. 100% Color Bars, PAL

NOISE REDUCTION: 15.05dB

APL = 50.7%

SYSTEM LINE L147 F1

ANGLE (DEG) 0.0

GAIN ؋ 0.750 –2.499dB

525 LINE NTSC

BURST FROM SOURCE

NOISE REDUCTION: 15.05dB

APL = 51.0%

SYSTEM LINE L29

ANGLE (DEG) 0.0

GAIN ؋ 0.750 –2.499dB

625 LINE PAL

BURST FROM SOURCE

DISPLAY +V AND –V

SETUP 7.5%

TPC 3. 100% Color Bars on Vector Scope, NTSC

SOUND IN SYNC OFF

TPC 5. 100% Color Bars on Vector Scope, PAL

REV. 0

–5–

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