I built a simple non inverting op amp amplifier with 2 resistors and a TS972IN powered between 0-5V but my output was always set to 5V. I tried several others Op Amp, others resitors and I also moved my circuit elsewhere (I'm working with a breadboard) and none of this changed anything. In order to solve my issue, I decided to build something even simpler, a voltage follower but I have the same behavior, the output stays to 5V…
My circuit with the pinout I use:
simulate this circuit – Schematic created using CircuitLab
Best Answer
Data sheet, page 5:
You're trying to make it work VDD + 0 to VCC - 0 V; that won't do. This is just what is known as Latch-up behaviour.
You have a rail-to-rail output opamp. What you'd need to have is a rail-to-rail input and output (RRIO) opamp for this to work.