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Node Capacitance Spectre

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9 Threads found on edaboard.com: Node Capacitance Spectre
I'm trying to find a way in spectre to calculate the capacitance between every two terminals of a transistor (I hope it exists). In spectre users' Guide, info could be used to print node-to-node capacitance. (...)
i think you can get the summary of parasitic capacitance at each node after doing layout parasitic extraction
Hi Connect port with large impedance (50MOhm for ex) to interesting node. Start SP at interesting freq. Then Cnode=imag(Y11)/2/pi/freq You can connect port via large capacitance also. Regards.
we can use .print cap(node) to plot capacitor curves in hspice. But how do we do that in spectre? I found there was a captab option in transient analysis. But it seems that it only calculate a capacitors at one point... Is there any idea?
First, you should using verification tool diva, dracula or calibre get the extracted file, and annoded the parisitic parameter. I know the cadence cdsdoc include some paper refer to it. you can read it
hi, is there a straight forward way in spectre to find out the total node cpacitance on a certain node during dc simulation ?
hey guys i want to plot capacitance on x axis through parameter sweep and voltage at a node on y axis.when i do performance analysis then i don't get voltage as an allowed variable.and without performance analysis i dont get capacitance on x axis. how can i do it? pls help soon if possible. thanx in advance a lot.
spectre works on Transient Imbalance (change in the node voltages)algorithms while SPICE works on capacitance charging and discharging algorithms. The methods are more or less similar in both.
In HSPICE you can define the capacitance of a capacitor with an equation. For example: Csensor node1 node2 c='5p*v(controlvoltage)' CTYPE=1 This will make your capacitor depend on the voltage at the node "controlvoltage". If this voltage is defined to be 1V from 0s to 500us, 2V from 500us to 1ms and back to 1V at 1ms, (...)