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Subject: Re: Exceeding OpAmp input voltage range
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Date: 10/07/02 at 1:51 PM
Posted by: Russ Kincaid
In Reply to: Exceeding OpAmp input voltage range posted by Alfonso Baz on 10/07/02 at 11:14 AM:
The voltage at the input pins of the op amp stays at zero until the output saturates, so you are well within the max rating of -0.3 volts input during normal operation. When the output does saturate (at about 26.5 volts), the input at the opamp pins attemps to go negative but is limited to about -.5 volts by internal diodes. As long as the current is limited to safe values by the input resistor, no damage will be done.
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