| 摘要 |
There is provided a potential comparing circuit of which output potential is almost equal to specific determining potential levels used in a next-stage logic circuit. The potential comparing circuit has a current-mirror circuit, a first transistor, a second transistor and an offset correcting circuit. The current-mirror circuit is connected to a first power source. The first transistor has a gate to which a first input signal is supplied. The second transistor has a gate to which a second input signal is supplied, a channel type of the second transistor being the same as a channel type of the first transistor. The offset correcting circuit is provided between a drain of the first transistor and an input point of the current-mirror circuit, for correcting a potential level obtained at a drain of the first transistor to correspond to specific potential levels related to the specific determination potential levels. The output signal being output from a point between the drain of the second transistor and the output point of the current-mirror circuit.
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