Gxxxxxxx n+ n– VCCAP nc+ nc– expression
.VCCAP label n+ n– nc+ nc– expression
.model mname C {args}
.model mname TABLE {args}
Voltage controlled capacitor.
N+ and n– are the positive and negative element (output) nodes, respectively. Nc+ and nc– are the positive and negative controlling nodes, respectively. Value is the transfactor in Farads per volt.
The simulator will faithfully give you a negative capacitor if it seems appropriate. Usually, this part is used with a behavioral modeling function, like PWL, which allows you to specify a table of capacitance vs. voltage.
You may specify the value in any of these forms:
All probes that apply to ordinary capacitors also apply here.