Application information

TSH343

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3

Application information

3.1

Using the TSH343 to drive Y-Pb-Pr video components

Figure 25.

Shapes of video signals coming from DACs

Figure 26.

TSH343 in single supply for any DAC output

1.

See the TSH344 datasheet on st.com for more information. It is possible to drive RGB signals with the

TSH344.

10mV

GND

590ns

(44t)

27ns

(2t)

54ns

(4t)

27ns

(2t)

590ns

(44t)

300mV

300mV

Black (30 IRE)

14.8µs (1100t): 1920*1080i

24.3µs (1800t): 1280*720i

•Fclock=74.25MHz

•t=1/Fclock=13.5ns

Synchronization tip

(0 IRE)

White (100 IRE)

0.030V

0.330V

1.030V

700mV

time

Frequency

Amplitude

30MHz

1Vp-p

Pb,B

video

outputs

LPF

LPF

LPF

Cable

Cable

Cable

+5V

75

Ω

75

Ω

75

Ω

TSH343

SO8

DAC

DAC

DAC

Pr,R

G

video

outputs

LPF

LPF

LPF

Cable

Cable

Cable

+5V

75

Ω

75

Ω

75

Ω

TSH344

SO8

R

DAC

DAC

DAC

B

HDTV

Digital synchro