AD8512ARM supply pin floating

Hello Tincy,

Generally, there are risks in leaving the supply pins on float in terms of power sequencing; the proper order is that the supplies of an op amp must first be established before an input signal is applied. If this isn’t followed, overvoltage and latch up conditions may occur.

A very insightful and detailed document by David Guo goes over the behavior of op amps given different conditions and cases, and what risks may arise if proper power sequencing is not followed; you may find the document here: https://www.analog.com/en/analog-dialogue/articles/improper-power-sequencing-in-op-amps-analyzing-the-risks.html

Hope this helps!

Regards,
Jean

Hello Tincy,

Generally, there are risks in leaving the supply pins on float in terms of power sequencing; the proper order is that the supplies of an op amp must first be established before an input signal is applied. If this isn’t followed, overvoltage and latch up conditions may occur.

A very insightful and detailed document by David Guo goes over the behavior of op amps given different conditions and cases, and what risks may arise if proper power sequencing is not followed; you may find the document here: https://www.analog.com/en/analog-dialogue/articles/improper-power-sequencing-in-op-amps-analyzing-the-risks.html

Hope this helps!

Regards,
Jean