adv473 Analog Devices, Inc., adv473 Datasheet - Page 10

• Manufacturer Part Number: adv473
• Description: Cmos 135 Mhz True-color Graphics Triple 8-bit Video Ram-dac
• Manufacturer: Analog Devices, Inc.

ADV473
25.24
MA
7.62
0.00
NOTE:
75
RS-343A LEVELS AND TOLERANCES ASSUMED ON ALL LEVELS.
26.67
MA
9.05
7.62
0.00
NOTE:
75
RS-343A LEVELS AND TOLERANCES ASSUMED ON ALL LEVELS.
DOUBLY TERMINATED LOAD, SETUP = 0 IRE, V
DOUBLY TERMINATED LOAD, SETUP = 7.5 IRE, V
0.950
0.286
0.000
V
1.000
0.340
0.286
0.000
V
Figure 5. Composite Video Output Waveform (Setup = 7.5 IRE)
100 IRE
43 IRE
Figure 6. Composite Video Output Waveform (Setup = 0 IRE)
92.5 IRE
40 IRE
7.5 IRE
Description
WHITE
DATA
DATA-SYNC
BLACK
BLACK-SYNC 1.44
BLANK
SYNC
NOTE
Typical with full-scale IOR, IOG, IOB = 26.67 mA, SETUP = 7.5 IRE,
V
26.67 mA full-scale output.
Description
WHITE
DATA
DATA-SYNC
BLACK
BLACK-SYNC 0
BLANK
SYNC
NOTE
Typical with full-scale IOR, IOG, IOB = 25.24 mA, SETUP = 0 IRE,
V
26.67 mA full-scale output.
REF
REF
Table VII. Video Output Truth Table (SETUP = 0 IRE)
Table VI. Video Output Truth Table (Setup = 7.5 IRE)
= 1.235 V, R
= 1.235 V, R
SET
SET
= 140 . External voltage reference adjusted for
I
(mA)
26.67
Data+9.05
Data+1.44
9.05
7.62
0
= 140 . External voltage reference adjusted for
I
(mA)
25.24
Data+7.62
Data
7.62
7.62
0
OUT
OUT
REF
= 1.235 V, R
REF
= 1.235 V, R
–10–
SYNC BLANK
1
1
0
1
0
1
0
SYNC BLANK
1
1
0
1
0
1
0
SET
= 140
SET
= 140
1
1
1
1
1
0
0
1
1
1
1
1
0
0
DAC
Input Data
FFH
Data
Data
00H
00H
XXH
XXH
DAC
Input Data
FFH
Data
Data
00H
00H
XXH
XXH
WHITE LEVEL
BLACK LEVEL
BLANK LEVEL
SYNC LEVEL
BLACK/BLANK
LEVEL
SYNC LEVEL
WHITE LEVEL
REV. A