Metal on Poly or diffusion

acbalbason said:

hi!

the way i look at it, you do not route over gates because of the thin oxide present below it. it is unlike the active region where thick field oxides exist. sure you are allowed to route over gates, but too heavy a metal can break your gate. especially for enhancement type transistors. there is practically only channel and a thin oxide to support the metals above it (if indeed you route over the gate).

- al

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siva497 said:

boss first of all how can u route M1 over transistor? it gets shorted with s and d.
M2 and above can be routed over transistor. but conditions are
Dont route a high frequency signal over analog transistor . In digital blocks u can route over transistor

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