One of my books on op amps advises to never connect an input signal to an op amp if the op amp lacks power supply voltages. However, that is what I would like to do, if it can be done without damaging the input buffering op amps of a signal processor, as this would eliminate the need for a switch to disconnect the input signals. In some situations, I would like to eliminate the output signal of the processor, and turning off the power of the processor would be the easiest way to do that. The schematic below shows the input stage of the processor.
Certainly under some circumstances I suppose damage could occur by applying an input signal to an IC and the IC is not powered. But I am unclear as to under what circumstances and how damage could occur.
-Pete
Certainly under some circumstances I suppose damage could occur by applying an input signal to an IC and the IC is not powered. But I am unclear as to under what circumstances and how damage could occur.
-Pete