FAQ

Question

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

Answer

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.

10071-1.gif

Figure1 Power On Sequence

10071-2.gif

Figure2 Power Off Sequence

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