Question about capacitance for the NX3L4051

[Sylvain2]

Hi,

I'm interested by the NX3L4051PW-Q100J analog switch.

In the datasheet, I see values for "input capacitance" and "on-state capacitance". Can someone tell me the difference ?

I want to connect a coil to the input of the analog switch and I need to know what value of capacitance will be seen by this coil

Thank you!

Sylvain

[Sylvain2]

Thank you!

[TomasVaverka · Accepted solution]

Hi Sylvain,

Input capacitance (Ci) is the internal capacitance seen at Sn (Select) and E (Enable) inputs. 

ON-state capacitance (Cs(on)) is the internal capacitance seen at the analog switch terminal when the switch is closed or ON. So this is the capacitance you need to consider.

Best regards,

Tomas