TSH103IDT 查看數據表（PDF） - STMicroelectronics
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TSH103IDT Datasheet PDF : 10 Pages
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Using the TSH103 to drive video signals
5
Using the TSH103 to drive video signals
TSH103
Figure 9. Video line interface implementation schematics
1Vpp
1V
Y 0.3V
Video
GND
DAC
DAC
load
resistor
Video
DAC
Pb
0.7Vpp
1V
0.3V
GND
DAC
load
resistor
Video
DAC
0.7Vpp
1V
Pr 0.3V
GND
DAC
load
resistor
+5V
2Vpp
2.3V
0.9V
GND
75Ω
75Ω Cable
1Vpp
1.15V
0.45V
GND
75Ω
TV
1.4Vpp
2.3V
0.9V
GND
TSH103
75Ω
75Ω Cable
0.7Vpp
1.15V
0.45V
GND
75Ω
1.4Vpp
2.3V
0.9V
GND
75Ω
75Ω Cable
0.7Vpp
1.15V
0.45V
GND
75Ω
The bottom of the synchronization tip at the DAC output can be as low as 0mV. In that case,
the bottom is equal to 310mV typical at the TSH103 output (see values of the output DC
shift in Table 3). The Y signal can be properly driven by the TSH103 because its low output
rail (VOL) is lower than 46mV (Table 3).
Figure 10. Details on Y or G or CVBS for synchronization tip
Amplitude
Y signal
DAC
GND
Synchronization tip
(close to zero volt)
White
(1V)
Black
(300mV)
time
6/10
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