INS-ANI
Full Member level 3
- Joined
- Feb 28, 2007
- Messages
- 152
- Helped
- 2
- Reputation
- 4
- Reaction score
- 1
- Trophy points
- 1,298
- Activity points
- 2,377
Hi,
I have a setup as below:
I am giving a pulse ( rise and fall transition) as input at IN and tracking the output at OUT.
Following are results of spice simulation:
I am trying to explain how changing edge rate at input affects edge-rate and delay at output.
As per the table above following are my observations:-
1) Increase in edge rate at input causes very small edge rate change at n24?
2) Increase in edge rate at input causes substantial In-to-n24 delay
3) Increase in edge rate at input causes no change in OUT edge rate?
4) Increase in edge rate at input causes substantial In-to-OUT delay?
Can you guys help me understand the theory behind four observations above?
I have a setup as below:
I am giving a pulse ( rise and fall transition) as input at IN and tracking the output at OUT.
Following are results of spice simulation:
HTML:
in_er_rise = 1.200e-11 1.800e-11 2.400e-11
in_er_fall = 1.200e-11 1.800e-11 2.400e-11
net24_er_rise = 9.412e-12 9.787e-12 1.062e-11
net24_er_fall = 8.048e-12 8.524e-12 9.425e-12
out_er_rise = 1.594e-11 1.594e-11 1.595e-11
out_er_fall = 1.491e-11 1.493e-11 1.494e-11
delay_n24_rise = 1.344e-11 1.661e-11 1.981e-11
delay_n24_fall = 1.433e-11 1.737e-11 2.045e-11
delay_rise = 3.194e-11 3.509e-11 3.823e-11
delay_fall = 3.288e-11 3.595e-11 3.899e-11I am trying to explain how changing edge rate at input affects edge-rate and delay at output.
As per the table above following are my observations:-
1) Increase in edge rate at input causes very small edge rate change at n24?
2) Increase in edge rate at input causes substantial In-to-n24 delay
3) Increase in edge rate at input causes no change in OUT edge rate?
4) Increase in edge rate at input causes substantial In-to-OUT delay?
Can you guys help me understand the theory behind four observations above?