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In my schematic +ve terminal of
capacitor is connected to one terminal and -ve terminal is connected to
some fixed DC voltage. I am donig layout in cadence vurtuso version
IC514 . It is giving some error like below
The minimum overlap of M1 ground plate to LSM is 10um .
What does it mean ?
Can I place metal contacts over metal contacts ?
You are giving an incomplete picture here, so I will state some assumptions about what you are doing/using.
I assume you are running a design rules check (DRC) which is producing this error message. You didn't state what process and PDK you are using, nor did you state the type of capacitor. For some caps like MIMs, there may be rules associated with nearby metals and rules for the metal connections to either plate of the cap.
You should look at M1 and how it overlaps LSM, which might stand for the lower side metal or bottom plate of a MIM cap. Make sure it overlaps at least 10 um. Just a guess though, since so few details are provided.