I maybe over thinking this a little two much, but I am trying to model a function generator at 1MHz with a Vpp from 5 to -5V for a 4 ohm load. But I am more interested in the output current of the function generator. The current output is about 200mA. The function generator that I am using is the Rigol DG1022Z Function function generator. I was wondering if I just and a current source and have it output a sine wave?


Or would I need to create another source in parallel but for voltage and with a amplitude of 10 V with the same frequency?

Overall goal, I am trying to amplify the output current from the function generator from 125mA to about 5 amps at 1 MHz.

 

Your numbers for voltage swing and current are a bit off. A 4Ω load will draw 1.25 Amperes at 5 Volts peak. In LTspice voltage and current sources are specified with their peak amplitude, not RMS. Is the 4Ω supposed to be flat across the entire frequency band?

 

an interactive function generator is right click the voltage source open advanced tab then operate the scissors then open
an interactive voltage dependent current source, right click open advanced tab. click your heels for the land of oz.