Vpeak to peak using LTspice

I am doing simulation using the amplifier (OPA2675). The type of the circuit: Differential Input Source V7 with label V(n004) & V8 with label V(n011). Output source R5.

Overview: As you can see in the picture my input simulation in corresponding to time, the green Sine wave is the input of the first amplifier in different amplitude. The blue sin wave is the input of the second amplifier which also have the different amplitude.

Goal: I want to draw a graph using LTspice, in this graph I want on the x axis have the Vpp of green (volt input of the first amplifier) and Vpp of the blue (volt input of the second amplifier), in order to get the relation between them and the output volt R5.

• we'll need some illustration of what you need. "Vin" is an input, which you typically specify; so there's nothing to calculate, you set that. Nov 16, 2023 at 0:02
• I removed all the unrelated tags – you don't mention any operational amplifier in your question, and this is a simulation, you can't do voltage measurements on it; it's simulated. Nov 16, 2023 at 0:03
• So my circuit is in the picture , as you can see i am using type of differential amplifier which the volt input is v7 & v8 , and now i want to measure the volt peak to peak of the voltage input of both voltage source v7 & v8 in different time domain from 0ns till 100ns , so i can Finally, plot the performance of the out voltage which is on R5 in correspondence to differences between volt peak to peak of the voltage input of both voltage source v7 & v8 in different time domain Nov 16, 2023 at 0:25
• @Hearth The only meaning I could surmise was that the OP (for reasons I don't fathom) wanted to get the peak to peak for a certain period of time for one input and a peak to peak for a different certain period of time for the other input. Can be done with .MEAS. No idea about why, though. Nov 16, 2023 at 3:28
• @Nadine I can't and won't argue, because I can do fairly interesting and complex calculations from .MEAS. Ratios of other .MEAS values, for example, and much more. I don't understand exactly why it is that you can't get what you want. But I'm not going to guess about it, either. You'll need to show me that you know how to use .MEAS and then show me what .MEAS is giving you that you don't want. Nov 16, 2023 at 23:47