Datasheet

75 W
Red
Green
Blue
75 W
75 W
75 W
75 W
75 W
75 W
75 W
75 W
75 W
75 W
75 W
Monitor Output
+3.3V +1.8V
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
36
35
34
33
32
31
30
29
28
27
26
25
48 47 46 45 44 43 42 41 40 39 38 37
3.3V3.3V
I C
2
2.2 mF
2.2 mF
0.1 mF
1.4kW
806 W
100
100
22 pF
22 pF
INPUT2
INPUT1
V =3.3Vto5V
A
0.1 Fm
0.1 Fm
H-Syncand
V-Sync
NotUsed
P’
R
P’
B
Y’
P’
R
P’
B
Y’
Component
480i
576i
480p
576p
720p
1080i
1080p
G’B’R’
H-Sync
V-Sync
806 W
1.4kW
75 W
75 W
2.2 mF
2.2 mF
2.2 mF
V
A
V
A
V
A
V
A
0.1 Fm
0.1 Fm
ADC
Scalar/
Decoder
THS7347
THS7347
www.ti.com SLOS531B –MAY 2007– REVISED OCTOBER 2011
placed first in the system. Since the blue color difference channel (P'
B
) is next and the red color difference
channel (P'
R
) is last, then it also makes logical sense to place the B' signal on the second channel and the R'
signal on the third channel, respectively. Thus, hardware compatibility is better achieved when using G'B'R'
rather than R'G'B'. Note that for many G'B'R' systems, sync is embedded on all three channels; this configuration
may not always be the case for all systems.
(1) Inputs and/or outputs can be ac- or dc-coupled if desired.
(2) H-Sync and V-Sync input resistance as shown above = 2.2 kΩ, but may be changed to any desired resistance.
(3) If the Monitor or Buffer PCB trace is > 25 mm, it is recommended to place at least a 10-Ω resistor in series with each
signal to reduce PCB parasitic issues
Figure 4. Typical R'G'B'HV and Y'P'
B
P'
R
AC-Coupled Inputs and DC-Coupled Output Configuration
Copyright © 2007–2011, Texas Instruments Incorporated 15