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Process corners,Voltage,temperature

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Hooda

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process voltage temperature corners

hello
i do folded mixer in 0.13u, i 've hardly got the specs required at typical simulation

now i am very frustrated of the process corner,Voltage , Temperature variation results of my mixer IIP3,conversion gain goes worse and worse :|
IIP3 from 2dBm ---> -3dBm at process corners and worse --->-7dBm atlow temperature..
what to do to counterpart these effects ..? is the solution to increase specs more than required what about if it reaches its limits ?
thanks
 

site:www.edaboard.com process corners

One solution is to over-design at the tyoical process corner to get higher specs. This is not always feasible.

Another alternative is to have a trimming option. When a certain spec is lost at a given corner, you should know what gets it to worsen at that corner then try to trim ( change size of passives, increase width of transistors, add more current..etc ) so that you get back your required specs. This will require digital programmability ( there should be switches that add parts in // or in series ).

After fabrication, measurements should be done then trimming should be performed accordingly
 

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    Hooda

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elbadry said:
One solution is to over-design at the tyoical process corner to get higher specs. This is not always feasible.

Another alternative is to have a trimming option. When a certain spec is lost at a given corner, you should know what gets it to worsen at that corner then try to trim ( change size of passives, increase width of transistors, add more current..etc ) so that you get back your required specs. This will require digital programmability ( there should be switches that add parts in // or in series ).

After fabrication, measurements should be done then trimming should be performed accordingly
Click to expand...
how about the production cost of it?
 

It depends.
Normally if your chip need CP, it will not increase the cost much. But the layout area should be a little bigger.
 

you need to decrease your reqirements in the specification, or try to find out another decision, which allow to achieve your requirements. First of all you may determine can you achieve this requirements with your technology or it is absolutely impossible.
 

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