TSH173 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TSH173

Triple video buffer with filter for SD video

STMicroelectronics 

Using the TSH173 to drive video components

TSH173

4

Using the TSH173 to drive video components

Figure 22. Video line interface implementation schematics

Video

DAC

R

1Vpp

1V

0.3V

GND

DAC

load

resistor

Reconstruction

Filtering

450mV

+ LPF

+6dB

5th Order

2Vpp

2.035V

0.635V

0.035V

GND

1Vpp

1V

0.3V

75Ω 0.0175V

75Ω Cable GND

75Ω

TV

Video

DAC

G

0.7Vpp

1V

0.3V

GND

DAC

load

resistor

Reconstruction

Filtering

450mV

+ LPF

+6dB

5th Order

1.4Vpp

2.035V

0.635V

GND

75Ω 75Ω Cable

0.7Vpp

1.0175V

0.3175V

GND

75Ω

Video

DAC

0.7Vpp

1V

B

0.3V

GND

DAC

load

resistor

Reconstruction

Filtering

450mV

+ LPF

+6dB

5th Order

TSH173

1.4Vpp

2.035V

0.635V

GND

75Ω 75Ω Cable

0.7Vpp

1.0175V

0.3175V

GND

75Ω

The interface is illustrated in Figure 23. It is composed of:

● Three 75-ohm resistors

● Three matching resistors

● One 10µF power supply decoupling capacitor

● One 10nF power supply decoupling capacitor

Figure 23. Bill of materials of the interface

+5V

Y,G

DAC

75Ω

Cable

R

Pb,B,C

DAC

75Ω

Cable

TV

R

Pr,R,CVBS

TSH173

SO8

75Ω

Cable

DAC

R

10/13

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