TSH173 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TSH173' PDF : 13 Pages View PDF
Electrical characteristics
TSH173
3.1
Synchronization tip
The TSH173, in single 0/5V supply, is designed to drive the video signal on the line without
any damage to the synchronization tip. This is achieved by a small internal DC shift and a
very low output rail. The DAC offset, as shown in Figure 18, can be as low as 0V.
Nevertheless, in order to minimize the DC component on the line, the output can be AC
coupled by a capacitor (Figure 20).
Figure 18. Input signal
160ns 150ns
300mV
DAC offset
4.6µs
Synchronization tip
64µs
Black (30 IRE)
(0 IRE)
GND
Figure 19. DC coupled output configuration
Video
DAC
TSH173
Vin
75Ω 75Ω Cable
75Ω Vout
Figure 20. AC coupled output configuration
Video
DAC
TSH173
Vin
220µF 75Ω 75Ω Cable
75Ω Vout
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