the best way to control leakage?

[dhaval4987]

In short channel designs, what is the best remedy for problems caused by leakage?
any suggestions?

 

[erikl]

Use a process option with the highest Vth values.

 

[dhaval4987]

that makes it slower! I want both, fast and not leaky! : /

 

[dick_freebird]

So you want a get-out-of-jail-free card?

Do you know what your dominant leakage mechanism is? Are you talking Vgs=0
or (in this analog section) subthreshold drain current? DIBL, which is worse at
extremely short channel but might respond to a moderate reduction in worst case
drain voltage? GIDL, which might only need you to not drive the gate so far
negative in an analog switch? Edge leakage which might want a channel-stop
or a closed geometry?

 

[dhaval4987]

Not sure I understand. the leakage is in form of drain current, even though the Vgs is not big enough.

 

[dick_freebird]

Well, to fix the "problem" (or natural characteristic) you have
to see or know what it responds to. Which might be predicted
if you knew the mechanism.

 

[leo_o2]

One of method is leakage compensation.
Please try to generate a duplicate current and inject it to cancel the leakage.

 

[sunjimmy]

How about adding distributed large-size PMOS power switch with high Vt ?