TSH345 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

TSH345

Triple video buffer with selectable filter for HD and SD video applications

STMicroelectronics 

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Using the TSH345 to drive YC, CVBS, YUV, YPbPr and RGB video components

Figure 30. Synchronization details (example for a black picture)

27 ns

54 ns

(4t)

27 ns

(2t)

•Fclock=74.25 MHz

•t=1/Fclock=13.5 ns

(2t)

590 ns

(44 t)

300 mV

HD

Black (30IRE)

300 mV

GN D

590 ns

(44 t)

14.8 us (110 0t): 1920/1080i

24.3 us (180 0t): 1280/720i

s yn c.t ip

160 ns 150 ns

SD

300 mV

GND

4.6 us

s yn c.t ip

Black (30IRE)

64 us

Figure 31. HD video signal

TSH345

AM00819

Video contents up to 30 MHz

300 mV

GND

DAC’s offset

(DAC’s offset on STi7200 = 28 mV)

1 Vp-p (+/- 5 %)

AM00820

14/23

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