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Jim's FAQ's

December 2009
0

            Not necessarily!  Op-Amps can have the “Rail to Rail” feature on the input only, output only, or both.  Different circuit parameters can also affect just how close to the rail the Op-Amp can go (for example, the load current can limit the output voltage of an op-amp with rail to rail output).  Be sure to check the manufacture’s datasheet to ensure its configuration will match your requirements.