Greetings，
I have problem with the tl972 op amp it fails to operate as expected I am using a voltage follower exactly like fig 17 page 11 of the spec sheet。
when the + node is set to 0 Volts the output goes to the +12 rail the OK。
I have checked my wire up the opamp is correctly powered as a single supply mode at +12 Volts the output p[in connected to the - node for unity gain，
when I set the + node to 0 Volts the output is 12 Volts
This behavior occurs as I approach 0 volts。
