How to find source resistance of a driver using IBIS in allegro

Status
Not open for further replies.
A

anand-pcb

Newbie level 2
Joined
Jan 22, 2011
Messages
2
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Location
coimbatore - india
Activity points
1,290
Dear all,

Please anybody tell me where or how to find source resistance of a driver using IBIS model in allegro 16.X.

Thanks in advance.
 

Hi anand,

Drivers have high resistance in the saturation region. So in order to get a realistic resistance from IBIS models you should concentrate on the linear region of the pull-up and pull-down transistors. In the I-V table of IBIS file locate two points wherein the current-voltage are linear. Then use the below formula to get the resistance ,

R= (V2 -V1)/(I2 - I1)


anand-pcb said:
Dear all,

Please anybody tell me where or how to find source resistance of a driver using IBIS model in allegro 16.X.

Thanks in advance.
Click to expand...
 
Reactions: marce

    M

    marce

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

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…