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The ndio in N-well tech - I want to know how it is?

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zj850908

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The ndio in N-well tech

In TSMC 0.35 pdk, there is a ndio and it is formed by N+&PW. But the tech is N-well tech. I want to know how it is?
 

Re: The ndio in N-well tech

N-well technology means that you're allowed to draw N-Wells only, not P-Wells.
So, everything is not N-Well is P-Well (i.e. P substrate).
N+&PW ndio(de) is a vertical diode. The anode is the N-Active area, the catode is the substrate (always grounded).
 

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