where is cvaractor element in ads?

[samane1]

where is cvaractor element in ads?

 

[electronicman26]

which designkit you use?

 

[samane1]

tsmc 0.18um

 

[electronicman26]

ok , then you have Junction varactor with constant Nr or W

 

[samane1]

i need c varactor of this image (mos varactor not p-n varactor)

 

[electronicman26]

i need c varactor of this image (mos varactor not p-n varactor)

ok, but in this image which capacitor is varactor!? i think this schematic use pmos transistors as varactor capacitance

 

[samane1]

i can nmos or pmos as c varactor?
i must be connect drain and source togheder?

 

[electronicman26]

yes it is possible
attach the image of complete circuit schematic that analysis the procedure and operation of circuit

 

[samane1]

this is oscillator
i want tune frequency range by varactor

 

[electronicman26]

ok, your image isnt complete but it seems the varactor is in parallel with C then affect the total capacitor