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S/N: 10071 Last Updated: Feb 18, 2016

Is an op amp or comparator how to apply supply voltage sequence?


It is necessary that the IC(op amp, comparator) is always used in the condition of no floting V-(GND) terminal. Therefore, it is necessary to be noted on using the dual power supply as follows.

  1. When the power turns on, V- power supply should be turned on before or just same with the V+ power supply.
  2. When the power turns off, V+power supply should be turned off before or just same with the V- power supply.

Here are shown example of Power On/Off Sequence to Figure 1 and Figure 2.

Figure1 Power On SequenceFigure1 Power On Sequence
Figure2 Power Off SequenceFigure2 Power Off Sequence
Category: Operational Amplifier Devices:  

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