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How different are 0.18um and 0.35um technology design

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Advark

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Hi, I have a doubt, a i have a circuit designed in 0.18um. How different can change if i implemented in 0.35um technology.

Can i extrapolate the W/L values ?
 

I know that, the thing is i want to implement a circuit in 0.35um that is already implemented in 0.18um.
What paremeters maybe useful to me.
 

larger oxide thickness --> smaller gm for same W/L
higher Vt --> headroom issues ( this is may be offset by the higher supply)
 

I think it can be function ok with a little tuning, however, you can't expect the same speed..
 

between 0.18µ and 0.35µ there is a big different in DRC(design rule checking)
-Technology: 0.35µ provide :1 Poly,4 Metal
-Technology: 0.18µ provide :1 poly,6 Metal
But to minimise a lot of mistake(parasite) you can choose 0.35µ.

Added after 37 seconds:

between 0.18µ and 0.35µ there is a big different in DRC(design rule checking)
-Technology: 0.35µ provide :1 Poly,4 Metal
-Technology: 0.18µ provide :1 poly,6 Metal
But to minimise a lot of mistake(parasite) you can choose 0.35µ.
 

Advark said:
Hi, I have a doubt, a i have a circuit designed in 0.18um. How different can change if i implemented in 0.35um technology.

Can i extrapolate the W/L values ?

Vt and supply will be change, but you can get the same result.
 

Advark said:
Hi this is the circuit


Any ideas for change W/L for 0.35um

Firstly, change W & L but make the W/L ratio constant, and don't change the current of each MOS.
Secondly, change the capacitor slightly because the capacitor will be larger than before.
Thirdly, simulate them and compare them.
 

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