# Electronics and Electrical Engineering Design Forum

## Analog

## CMOS circuit

how to calculate W and L in CMOS??

I find it difficult..

help

###### Asked By: gama Permana

I second that!

‘W’ could stand for:

- Width
- Watts
- Wow-factor
- Wife avoidance
- Wisp potential (as in
*smoke*)

‘L’ could stand for:

- Length
- Inductance
- Load
- Loss
- Leakage
- Laziness (as portrayed in the brevity of this question)
- Lack of interest (so why am I spending so much time on this???)
- Lots of fun coming up with these ;)

W in the word width and length L in the word ..

if you can help me to tell how to calculate the W and L …

thank you

I think , probably you need a FIB set or maybe other NANOelectronics set similar STM , SEM ,TEM , AFM , NSOM , … .

Focused ion beam (FIB) systems have been produced commercially for approximately ten years, primarily for large semiconductor manufacturers.

in the CMOS circuit are the W and L..

I’m analyzing the comparator circuit with the help of mentor graphics and LTspice .. as an example

written there and the value of L = 1u W = 75.59u, how do I know the value of it??

how the formula??

sequence is presented below.

Well I think I cant help you with your circuit but with the information you gave us so far:

You want to know how to calculate L = 1u ?

Try L = 1m * 1m gives 1u, for W you can do it in a similar way…

You think this is a stupid answer ?

I think so too, but maybe you take some time to analyze your question…

And read carefully Steves comment maybe there is a hidden hint…

Thats really difficult, do you know what you are asking ? I dont…

Are you asking for width and length of a CMOS chip ? Maybe the datasheet helps…

Has your question something todo with power requirement and inductivity ?

Maybe you could precise your question a little bit

n the CMOS circuit are the W and L..

I’m analyzing the comparator circuit with the help of mentor graphics and LTspice .. as an example

written there and the value of L = 1u W = 75.59u, how do I know the value of it??

how the formula??

sequence is presented below.