TSH344

Application information

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3.3

Delay between channels

Figure 30. Measurement of the delay between each channel

The delay between each video component is an important aspect in high definition video

systems. To properly drive the three video components without any relative delay, the layout

of the TSH344 dice has a very symmetrical geometry. this has a direct effect on the

synchronization of each channel, as shown in Figure 31. There is no delay detected

delay between the inputs and the outputs is equal to 4ns.

Figure 31. Relative delay between each channel

75

Ω

75

Ω Cable

75

Ω

75

Ω

75

Ω Cable

75

Ω

75

Ω

75

Ω Cable

75

Ω

+6dB

+6dB

+6dB

5V

Vin

V1

V2

V3

75

Ω

-4ns -2ns

0s

2ns

4ns

6ns

8ns 10ns 12ns 14ns 16ns 18ns 20ns

Vcc=5V

Load=150

Ω

Time