[SOLVED] different cmos process

[arun2011]

hi all
I am new to analog layout ...can anyone tell wats the difference between different cmos process like 180um and 90um....pls explain in detail...these differences are baisically based on wat??

regards
arun

 

[ted]

Hi,

If you are designing electronics devices using different CMOS technologies inside some components, it does not matter terribly much. The um -figures you mention refer to the internal feature sizes ("line widths") of the circuits. Of course, those dimensions have consequences to the performance and other properties of the cmos-based component. The dimensions tell more about the process technology used than properties of the part.

However, look rather closely at the data sheets and application notes from suppliers. The most relevant things for electronics circuitry and device design are usually expressed on data sheets, and measured often in units closer to electronics world, such as Volts, Ohms, Decibels, milliAmps and nanoseconds. And very seldom in um, ml or mg. Application notes give ideas for the circuitry around the chips, and can give sometimes pretty smart cookbook-solutions.

br ted

 

[arun2011]

tanks for ur reply ted....from the analog layout point of view .13um , .18um are different technologies my question is exactly on wat basis they r different??i mean is it the minimum gate length or sometng like that

regards
arun

 

[BigBoss]

Minimum gate length and minimum lithrographical distance.