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| 型號(hào)： | THS8133BCPHPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 0.005 us SETTLING TIME, 10-BIT DAC, PQFP48 |
| 封裝： | PLASTIC, HTQFP-48 |
| 文件頁數(shù)： | 7/25頁 |
| 文件大?。?/td> | 549K |
| 代理商： | THS8133BCPHPG4 |
THS8133, THS8133A, THS8133B
TRIPLE 10BIT, 80 MSPS VIDEO D/A CONVERTER
WITH TRILEVEL SYNC GENERATION
SLVS204C APRIL 1999 REVISED SEPTEMBER 2000
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
APPLICATION INFORMATION
SMPTE 253M (continued)
Table 7. Video Standards Compatible with SMPTE 253M
STANDARD
TITLE
SMPTE 125M
Component Video Signal 4:2:2 BitParallel Digital Interface
SMPTE 267M
BitParallel Digital Interface Component Video Signal 4:2:2 16x9 Aspect Ratio
SMPTE 170M
Composite Analog Video Signal NTSC for Studio Applications
The SMPTE 253M standard defines a GBR component set with positive going signals and a maximum peak
level of 700 mV from blanking level. The green signal has a negative-going sync pulse of amplitude 300 mV
from blanking level. The dc offset, as defined by the blanking level of the signal, is 0.0 V
±1.0 V. Figure 12 shows
the waveform of the green channel, onto which the horizontal sync is inserted.
H Blanking rise time
90%
50%
10%
Sync rise time
Horizontal
reference
point
Blanking Start
to H reference
50%
90%
10%
Sync
H reference to Blanking End
50%
Figure 12. SMPTE 253M Line Waveform (green channel)
For this mode, the INS3_INT control should be kept low to enable sync-on-green only and the device is put in
GBR 4:4:4 mode. This corresponds to the GBR with sync-on-green operation mode of Table 1.
Table 8 lists the THS8133 output currents that will produce compliant signals to this standard after proper
termination, together with the required input signals.
Table 8. THS8133 Signals for SMPTE 253M Compliant Operation
LEVEL
AGY
ARPr,ABPb
SYNC
SYNC_T
BLANK
DAC INPUT
LEVEL
(mA)
(V)
(mA)
(V)
SYNC
SYNC_T
BLANK
DAC INPUT
White
26.67
1.000
18.67
0.7000
1
X
1
3FFh
Video
video+8.00
video+0.3
video
1
X
1
data
Black
8.00
0.3000
0
1
X
1
000h
Blank
8.00
0.3000
0
1
X
0
xxxh
Sync
0
x
xxxh
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