AMSA84
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Hi guys,
I've tried several non overlap circuits, just google in images for non overlaping circuits.
Here I present the non overlap circuit done with 2 nand and 1 not then 2 delay lines in each branch.
Picture:
![nonoverlap.png nonoverlap.png](https://www.edaboard.com/data/attachments/45/45471-97bb9e4e97b0dd6d1bd42f790b279659.jpg)
The problem here is that I can't aproximate both the rise and fall edges even more. The only way is to remove the delay lines. Even though if I wish to separate them a bit, using the delay lines it's impossible.
I am using 500Mhz of switching frequency (VPULSE).
Basically the question here is how can I aproximate the edges?
As I said, I did the same with other types os non overlaping circuits but the result is pretty much the same.
Kind regards.
EDIT: If I add more delay (2) the edges get more far away from each other. If I add only one more delay (3) the wave gets a strange shape. It only works with pairs. Why this happens?
If I reduce the size of the transistors in the delay line the signal gets strange because it can't supply current to the nand because of its size.
My tech is UMC130.
I've tried several non overlap circuits, just google in images for non overlaping circuits.
Here I present the non overlap circuit done with 2 nand and 1 not then 2 delay lines in each branch.
Picture:
![nonoverlap.png nonoverlap.png](https://www.edaboard.com/data/attachments/45/45471-97bb9e4e97b0dd6d1bd42f790b279659.jpg)
The problem here is that I can't aproximate both the rise and fall edges even more. The only way is to remove the delay lines. Even though if I wish to separate them a bit, using the delay lines it's impossible.
I am using 500Mhz of switching frequency (VPULSE).
Basically the question here is how can I aproximate the edges?
As I said, I did the same with other types os non overlaping circuits but the result is pretty much the same.
Kind regards.
EDIT: If I add more delay (2) the edges get more far away from each other. If I add only one more delay (3) the wave gets a strange shape. It only works with pairs. Why this happens?
If I reduce the size of the transistors in the delay line the signal gets strange because it can't supply current to the nand because of its size.
My tech is UMC130.
Last edited: