TSH343(2006) Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
TSH343 Datasheet PDF : 14 Pages
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Using the TSH343 to Drive Y-Pb-Pr Video Components
4
Using the TSH343 to Drive Y-Pb-Pr Video
Components
TSH343
Figure 27. Shapes of video signals coming from DACs
Y
R
Video
DAC
Pb
Video
DAC
G
Pr
B
100 IRE
White Level
30 IRE
Black Level
0 IRE
GND
Y signal
(synchronization tip)
Image Content
300mV
1Vp-p
R,G,B,Pb,Pr signals
(no synchronization tip)
Image Content
Figure 28. Implementation of the video driver on output video DACs
(1) DAC output (2) Amplifier input (3) Amplifier output
(4) On the line
20mV
0V
Content of the
video signal+ tip synchro.
3,24V
1Vp-p
620mV
0V
1Vp-p
+600mV
1,24V
0V
+5V
2Vp-p
Amplifier output rail
(3.7V min.)
Amplifier output rail
(70mV max.)
620mV
0V
1Vp-p
Y
Video
DAC
Reconstruction
Filtering
LPF
600mV
+ +6dB
1Vpp
75Ω
2Vpp
75Ω Cable
1Vpp
75Ω
Video
DAC
Pb
Reconstruction
Filtering
LPF
600mV
+ +6dB
0.7Vpp
75Ω
75Ω Cable
1.4Vpp
0.7Vpp
75Ω
Pr
Video
DAC
Reconstruction
Filtering
LPF
600mV
+ +6dB
0.7Vpp
TSH343
-5V GND
75Ω
1.4Vpp
75Ω Cable
0.7Vpp
75Ω
TV
10/14
Rev. 2
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