I've been struggling on build a noninverting amplifier with TL972IP (datasheet).
Here's what I've made:
Orange is for VCC+, Yellow is for VCC-, Green is for GND. Blue is for a signal input. Resistors are for feedback.
As it is hard to see, here's a diagram:
With the configuration above, I've got this:
Yellow is the input and Blue is the output. As you see, input is attenuated (expected: gain of 2) and nagatively biased.
Where can I look into and see what's going wrong with this circuit?