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TSH173 数据表(PDF) 10 Page - STMicroelectronics |
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TSH173 数据表(HTML) 10 Page - STMicroelectronics |
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10 / 13 page ![]() Using the TSH173 to drive video components TSH173 10/13 4 Using the TSH173 to drive video components Figure 22. Video line interface implementation schematics 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 75 Ω 75 Ω Cable 75 Ω Video DAC LPF Reconstruction Filtering 5th Order R 75 Ω 75 Ω Cable 75 Ω Video DAC G 75 Ω Video DAC B TV 450mV TSH173 75 Ω Cable 75 Ω +6dB + LPF Reconstruction Filtering 5th Order 450mV +6dB + LPF Reconstruction Filtering 5th Order 450mV +6dB + DAC load resistor DAC load resistor DAC load resistor 0.7Vpp 0.3V GND 1V 1Vpp 0.3V GND 1V 0.7Vpp 0.3V GND 1V 1Vpp 0.3V GND 1V 0.7Vpp 1.4Vpp 2Vpp 0.635V GND 2.035V 0.035V 0.0175V 0.635V GND 2.035V GND 1.0175V 0.3175V 0.7Vpp 1.4Vpp 0.635V GND 2.035V GND 1.0175V 0.3175V 75 Ω 75 Ω Cable 75 Ω Video DAC LPF Reconstruction Filtering 5th Order R 75 Ω 75 Ω Cable 75 Ω Video DAC G 75 Ω Video DAC B TV 450mV TSH173 75 Ω Cable 75 Ω +6dB + + LPF Reconstruction Filtering 5th Order 450mV +6dB + + LPF Reconstruction Filtering 5th Order 450mV +6dB + + DAC load resistor DAC load resistor DAC load resistor 0.7Vpp 0.3V GND 1V 1Vpp 0.3V GND 1V 0.7Vpp 0.3V GND 1V 1Vpp 0.3V GND 1V 0.7Vpp 1.4Vpp 2Vpp 0.635V GND 2.035V 0.035V 0.0175V 0.635V GND 2.035V GND 1.0175V 0.3175V 0.7Vpp 1.4Vpp 0.635V GND 2.035V GND 1.0175V 0.3175V +5V Cable 75 Ω Y,G Cable 75 Ω DAC Pb,B,C DAC Cable 75 Ω DAC Pr,R,CVBS TSH173 SO8 TV R R R +5V Cable 75 Ω Y,G Cable 75 Ω DAC Pb,B,C DAC Cable 75 Ω DAC Pr,R,CVBS TSH173 SO8 TSH173 SO8 TV TV R R R |
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