Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

What does Mult. means in a schematic?

Status
Not open for further replies.
D

drabos

Full Member level 6
Joined
Jan 3, 2006
Messages
397
Helped
45
Reputation
90
Reaction score
15
Trophy points
1,298
Activity points
3,768
Hello,

I saw many articles,... that they give a Mult. parameter besides the transistors's
W/L.

For example:
Tran.: M2 , W/L[um/um]: 6/2, Mult.: 40
Tran.:Mp, W/L[um/um]: 20/2, Mult.: 10360

So, what's this Mult. parameter means?
 

Multiplication factor - how many transistors are connected in parallel.
 

    D

    drabos

    Points: 2
    Helpful Answer Positive Rating
So,for example the 10360 are the numbers of transistors? Isn't it too much?

Is it because of matching?
 

what is the meaning of matching?
 

In my nomenclature: matching is the following:

For example:
You have to use 2 resistors which ratio has to be very accurate. For example: 1:20
Then you use 21 equal resistors. Then it will be better than you use a resistor and a 20 times bigger resistor.

I hope I was understable.
 

in this multipliers means the given W/L transistors 40 should be connected in parallel
 

    D

    drabos

    Points: 2
    Helpful Answer Positive Rating
How can I simulate and handle the multiplication transistors?

I use :Cadence Virtuoso (to draw the schematic)+Affirma( Spectre, SpectreS,Spectre RF)

In the nmos and pmos transistor model I can't set the Multiplication.
I want to find the easiest way (and of course I want to lay down simultaneously when I design the layout these 30-40 parallel transistor )

Thanks,
 

it is easy for you to set the multiplication in cadence. the transistor has a m parameter, it equal to multiplication
 

    D

    drabos

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top