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how to connect the plates of dummy capacitor?

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Robertt

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where I should connect the dummy capacitors' plates? just leave them unconnected or connect them to VDD or GND?

Thanks a lot
 

connect them to GND.
 

Can I connect one plate to gnd, another to vdd to filt the power supply's noise?
 

Dummy cap used for matching?
Keep in mind, if you connect them to gnd/vdd will introduce some parasitic capacitance on the perimeter of you cap.
I'd say to leave upper plate in open circuit. This is how is done in layout pdks with parametric cells.
 

Connect to rail
I think floating is not good
 

Connect to rail
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connect to rail, you mean power supply?

ocarnu,

leave the upper plate open wont cause any error when you do LVS checking?
 

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