Hi there,
I'm searching for a function in the Probe window to evaluate the X value of a DC sweep (in the case here the input voltage) at a certain Y position. Saying: X @ Y(where Y = somevalue)
I want to run a MC Analysis and I have to check how the threshold is changing as function of the input voltage and tolerance.
There is a function YatX and also some functions XatMin/XatMax but I have to search for a dedicated value and not for min/max values
Does anybody know a possible solution for this?
thanks
philipp
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Hello,
I am not sure it makes sense. It is possible as you mentioned to automatically show the X value for a maximum Y value of a set of traces (XatYmax). However, how do you want to look for the value of X for a Y value of a set of traces? How can you guarantee that such Y value is going to be presented in each trace? In my opinion it does not make any sense. The only possibility here is look for a Y value for a particular X value of a set of traces.
I hope it clarifies. Let me know you opinion.
Regards
Hi Roberto,
I try to describe what I have as a simulation output, then my whish for the function X at Y is more clear.
I make a DC sweep and measure the current through a LED string. The LEDS are bypasses by a FET in case that the input voltage is too low. Depending on the forward voltage range of the used LED, the circuit switches a little bit earlier or later than wanted. For this I added a DEV value for the parameter and made a MC analysis. Now I want to fix my Y value to let's say 80% of the maximum value. Then I want to evaluate how the X-axis (in this case the input voltage of the circuit) changes as a function of the forward voltage. So I would be able to plot this in a histogram.
I could also send you a picture of the simulation output if this helps.
thanks a lot
philipp
Hi,
Yes, I think it helps a little bit. I think you could use the measurement XatNthY. In this function you have to introduce the Y_value you are looking for and you get as result the X_value.
If this does not help, please share an image of the probe window with your traces.
Regards,
Roberto