In my project I have to build an LVDT including its signal conditioner circuit. I have recently found on the internet that one can build an LVDT using a very inexpensive signal conditioner circuit which includes components such as ADA2200, ADG794 and AD7192. Bevore ordering these components I would like to simulate the circuit just to make sure its performance does meet my requirment. Unfortunatelly I could not found any spice models for these components (ADA2200, ADG794 and AD7192). Does anyone has any Idea what I should do in this case ?