Hi there,
I want to build a two stage non inverting amplifier with a digital potentiometer controlling both stages. The op amp is analog's AD8599 which can operate up to +/-15volts. The potentiometer is Analog's AD8402 which operates to a maximum votage of 5 volts.
I have created a spice simulation of this to check that the voltage doesnt exceed the potentiometer's specs. In the picture you can see two traces - both of which are significantly below 1 volt - each trace is taken just after each digital pot....
The other thing is that this particular pot runs off a single voltage rail... I note there are a number of dual rail potentiometers available (although much higher resistance)... given this particular application do I need a duel rail pot here...
so...
So based on this can I use this potentiometer in this scenario (given its 5 volt limit)... The spice modelling indicates the potentiometer wont exceed is rated maximum however I was wondering if an informed member might have a look and tell me if this will indeed work?
Kind Regards
Simon