Other Parts Discussed in Thread: TINA-TI, , LMP2022, OPA333
Tool/software: TINA-TI or Spice Models
There must be some wrong in the spice model of OPA335.
I built a simple single supply differential amplifier with a reference voltage 1.5V.
The voltage difference between + and - of the OPA539 is about 9mV.
The bias of output is about 1.77V.
I replace with OPA333 and LMP2022. The result is right.
Please check the spice model of OPA335.