Other Parts Discussed in Thread: OPA1632, , TINA-TI
Tool/software:
Hi there,
I am using the OPA350 essentially to buffer and distribute a Common Mode voltage of 1.5 V from a codec to the AmpRef inputs of a bunch of OPA1632 op amps.
Firstly, I made an error and the output of the OPA350 was designed to be 3V (I can't recall why), however, when I measure the output voltage no my actual circuit I am reading 6.11V. I simulated my circuit using the OPA350 in Tina-TI and it confirms that my output should be ~ 3.14V. How on earth is it measuring 6.11V on the actual implemented circuit? I'll include my Tina-TI file and the schematic of the implementation for review.
I need to understand why i'm getting an unexpected output level. I need to modify my original circuit to achieve a simple voltage follower arrangement, but can't do so if this current problem I'm experiencing will also need to be incorporated into my modifications.
Thank you for your support!OPA350PA circuit.TSC