AnsweredAssumed Answered

Questions about AD8139 power supply flunctuation with output voltage

Question asked by xiaoaxin on May 30, 2018
Latest reply on May 30, 2018 by JinoL

I simulated an op amp of AD8139 in multisim, found there is a nonlinear fluctuation in amp's power supply, and the power supply current and the output voltage have quadratic or exponential relationship. So I want to analyses this reason of nonlinear fluctuation,could you offer me a Schematic Diagram of AD8139 since there is no detailed schematic diagram in the existing manual of AD8139, if you are not convenient to provide the internal schematic diagram, please explain to me in detail why the power supply fluctuation occurs.


The supply power for AD8139 is +5V and -5V.

The input range is -2.5V~+2.5V.

The scheme and the phenomenon are as follows.

Thank you very much!