If you're running LTspiceXVII on Windows10 then the .sub file and the .asy file need to be in the ....\User\Documents\LTspiceXVII\lib\ path if you want the model to appear in the LTspice drop-down list. Otherwise you can save them in the folder where your .asc file is.

 

hi,
I do not use PSpice.
This is a LTSpice simulation, using your values.
E

I want to ask a question, how did you draw this graphic .I don't know to use LTspice, can you write the steps one by one?

 

hi,
I do not use PSpice.
This is a LTSpice simulation, using your values.
E

How did you do Vsig?

 

hi,
I used two Voltage sources to give a differential input signal to the INA.
The signal is set as a Piece Wise input.
ie;
PWL
at 0 sec the signal level is 0V
at 1 sec the signal level is 0.5v

As the polarity of the two sources have a 180 degrees phase difference, it means the differential signal Vsig is 0v thru 1v over a 1 second period.

Is this what you are asking.?
E

EDIT:
This image shows the va, vb and the differential va_vb , input signals