AD725_15 Datasheet, PDF (5/20 Pages) Analog Devices – Low Cost RGB to NTSC/PAL Encoder with Luma Trap Port

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–