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AD721 데이터시트(PDF) 4 Page - Analog Devices

부품명 AD721
상세설명  RGB to NTSC/PAL Encoders
PDF  8 Pages
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD721 데이터시트(HTML) 4 Page - Analog Devices

  AD721 Datasheet HTML 1Page - Analog Devices AD721 Datasheet HTML 2Page - Analog Devices AD721 Datasheet HTML 3Page - Analog Devices AD721 Datasheet HTML 4Page - Analog Devices AD721 Datasheet HTML 5Page - Analog Devices AD721 Datasheet HTML 6Page - Analog Devices AD721 Datasheet HTML 7Page - Analog Devices AD721 Datasheet HTML 8Page - Analog Devices  
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background image
75
Ω
75
Ω
TEKTRONIX TSG 300
COMPONENT VIDEO
WAVEFORM GENERATOR
AD720/AD721
RGB TO NTSC/PAL
ENCODER
SONY
MONITOR
MODEL 1342
TEKTRONIX 1910
COMPOSITE VIDEO
WAVEFORM GENERATOR
GENLOCK
RGB
3
COMPOSITE
SYNC
FSC
4FSC
PIXEL-CLOCK
GENERATOR
COMPOSITE VIDEO
TEKTRONIX VM700A
WAVEFORM MONITOR
Figure 1. AD720/AD721 Evaluation Setup
0.10
0.05
0.00
–0.05
–0.10
0.00
–0.04
0.00
–0.01
–0.04
–0.10
0.10
0.05
0.00
–0.05
–0.10
0.00
0.05
0.05
0.04
0.07
0.01
1ST
2ND
3RD
4TH
5TH
6TH
DG DP(NTSC) (SYNC = EXT)
FIELD = 1 LINE = 21
DIFFERENTIAL GAIN (%) MIN = –0.10; MAX = 0.00; p-p/MAX = 0.10
DIFFERENTIAL PHASE (
°) MIN = 0.00; MAX = 0.07; p-p = 0.07
Figure 2. Composite Output Differential Phase and Gain,
NTSC (Nulled to Chroma Output)
100.0
0.0
0.0
50.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.5
NOISE REDUCTION: 15.05dB
APL = 49.6%
525 LINE NTSC; NO FILTERING
SLOW CLAMP TO 0.00V AT 6.63
µs
SYNC = SOURCE
FRAMES SELECTED: 1 2
MICROSECONDS/PRECISION MODE OFF
VOLTS
IRE:FLT
Figure 3. Modulated Pulse and Bar, NTSC
0.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
MICROSECONDS
FRAMES SELECTED: 1 2; APL = 45.8%
525 LINE NTSC; NO FILTERING
SLOW CLAMP TO 0.00V AT 6.63
µs
PRECISION MODE OFF
SYNC = SOURCE
100.0
0.0
0.0
50.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.5
VOLTS
IRE:FLT
Figure 4. 100% Color Bars, NTSC
0.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
MICROSECONDS
FRAMES SELECTED: 1 2; APL = 11.3%
525 LINE NTSC; NO FILTERING
SLOW CLAMP TO 0.00V AT 6.63
µs
PRECISION MODE OFF
SYNC = SOURCE
100.0
0.0
0.0
50.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.5
VOLTS
IRE:FLT
Figure 5. Multipulse, NTSC
5.35
µs
4.82
µs
8.0
CYCLES
39.4 IRE
85ns
73ns
H TIMING MEASUREMENT RS-170A (NTSC)
FIELD = 1 LINE = 22
39.2 IRE
AVERAGE 32 TO 32
Figure 6. Horizontal Timing, NTSC
4.82
µs
1.98
µs
292.1mV
81ns
AVERAGE 32 TO 32
302.2mV
H TIMING (PAL)
LINE = 17
82ns
5.52
µs
Figure 7. Horizontal Timing, PAL
AD720/AD721–Typical Characteristics
–4–
REV. 0



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