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What criteria used in varactor diode for UPD6464A and UPD6465 OSD ICs?

Latest Updated:03/01/2006

Question:

For UPD6464A and UPD6465 OSD ICs, what criteria are used to select a varactor diode?

Answer:

Use a varactor diode whose capacitance changes in the range of approximately 2 to 10 pF when the voltage varies by 1 to 4 V.
Also, since the capacitance of the capacitor connected to pin 12 is the value when 1SV163 is used, be sure to re-evaluate the capacitance of the capacitor when the varactor diode is changed.
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