LTSpice Transconductance - HELP

I am a beginner to LTSpice and need help to plot the graph of the transconductance of the below-given circuit, on LTSpice.

• The diagram is of a differential amplifier whose supply voltage is 1V. The inputs are for the moment +/-1 to test the circuit.
• This circuit forms as a symbol of a Gm-cell. So I really need to get this plot to figure out the latter stuff.

Please provide guidance. I have attached the file and picture of the circuit. Thank you!

I do not have the cmosedu_models.txt.
Will this work with only 1V supply?
Will this work with one input at -1V, with no negative supply?

HI ronsimpson, Thanks for replying

1. You can download the model file from here https://cmosedu.com/videos/ltspice/ltspice_videos.htm. Check the 5th video files content.
2. This is supposed to work in 1V supply as told by my prof
3. Can you explain a bit more what you mean by negative supply? Are you asking if Vss should be -1v ?