amr.maghraby
Junior Member level 2
is it possible to measure the parasitic capacitance at a certain node in a schematic in cadence??
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I don't know what you want to mean by "in a schematic in cadence" at all.is it possible to measure the parasitic capacitance at a certain node in a schematic in cadence??
.OPTION CAPTAB
Adds up all the capacitances attached to a node and prints a table of singleplate
node capacitances.
Syntax
.OPTION CAPTAB
Default 0
Description
Use this option to print a compiled table of single-plate node capacitances for
diodes, BJTs, MOSFETs, JFETs, and passive capacitors at each operating
point.
Note:
When .OPTION CAPTAB is used to estimate the equivalent capacitance of
the circuit nodes, HSPICE can give a zero capacitance values for some
nodes when a resistance is connected to that node. The reason for getting
0 is that the capacitance is a dynamic, frequency-dependent capacitance
and not a static capacitance. You need to run an AC analysis to see a nonzero
node capacitance.
Yes, it is.
I don't know what you want to mean by "in a schematic in cadence" at all.
However Synopsys HSPICE have following.
Code:.OPTION CAPTAB Adds up all the capacitances attached to a node and prints a table of singleplate node capacitances. Syntax .OPTION CAPTAB Default 0 Description Use this option to print a compiled table of single-plate node capacitances for diodes, BJTs, MOSFETs, JFETs, and passive capacitors at each operating point. Note: When .OPTION CAPTAB is used to estimate the equivalent capacitance of the circuit nodes, HSPICE can give a zero capacitance values for some nodes when a resistance is connected to that node. The reason for getting 0 is that the capacitance is a dynamic, frequency-dependent capacitance and not a static capacitance. You need to run an AC analysis to see a nonzero node capacitance.
Cadence Spectre also have similar ability.
https://www.edaboard.com/showthread.php?380999
What do you want to mean ?i have connected a circuit in cadence