| 摘要 |
<P>PROBLEM TO BE SOLVED: To surely remove signal changes, caused by noise components, from the comparison signals of a comparator. <P>SOLUTION: A comparator circuit is equipped with the comparator 20 and a timer circuit 30. The timer circuit 30 outputs output signal V<SB>OUT</SB>, while inverting it between low level and high level, when the high level is maintained at least over from a first timing and a second timing, after the comparison signal V<SB>COMP</SB>of the comparator 20 is inverted from low level to high level and is output. The timer circuit 30 has a memory means 38 for storing the fact that the comparison signal V<SB>COMP</SB>has been inverted from low level to high level with the first timing, when this is confirmed the fact. The memory means 38 cancels the memory state, when the comparison signal V<SB>COMP</SB>is inverted between the first timing and the second timing. <P>COPYRIGHT: (C)2009,JPO&INPIT |
