the impedance of CCD sensor clock

[EDA_hg81]

Should I consider the input impedance of CCD clock is high or low?

How I can match the impedance of CCD clock with PCB trace?

Thanks.

 

[keith1200rs]

Which CCD? Some have built in buffers so you just have a logic gate input. Some have very high capacitance (but you would normally have a driver IC).

Keith

 

[FvM]

Assuming a low capacitance, there are no particular impedance matching problems other than known with digital logic.
If its a direct "analog", high capacitance input, no PCB trace can actually match it. At best you can place the driver near to the
CCD and use a sufficient wide (e.g. 50 ohm) low inductance trace. If a longer trace cant be avoided, you can consider a
20 to 50 ohm trace and source side impedance matching.

For a detailed discussion, the actual device data should be known.

 

[EDA_hg81]

Thank you.

I only want to get general idea.

Have a nice weekend.