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The comparator is used to provide a digital output indicating which of two analog input voltages is larger. It is a single bit analog-to-digital converter. The comparator is very similar to an operational amplifier but has a digital true/false output. Since the comparator is basically an amplifier, the op-amp schematic symbol is used, but to avoid confusion the symbol C may be inserted inside the op-amp symbol.

Doug Gingrich
Tue Jul 13 16:55:15 EDT 1999