To provide a semiconductor integrated circuit for detecting a maximum or minimum voltage position of signal voltage impressed to respective signal input terminals of plural circuit units by voltage impressed to the other terminal side of a 2nd capacity means.
A semiconductor integrated circuit is provided with plural circuit units each of which is constituted of connecting the gate of a transistor(TR) 8 to a signal input terminal through a 1st capacity means 13, connecting a common node between the gate and the means 13 to one terminal side of a 2nd capacity means 12 and connecting control means 27, 28, 18 for varying voltage impressed to the other terminal side of the 2nd capacity means 12 between the drain of the TR 8 and the other terminal side of the means 12 so as to furthermore increase/decrease a drain current correspondingly to the increment/decrement of the drain current. The sources of respective TRs in plural circuit units are connected to a constant current source in common and a maximum or minimum voltage position of signal voltage impressed to respective signal input terminals is detected by voltage impressed to the other terminal side of the 2nd capacity means 12.
| JPS5249755 | OPERATIONAL AMPLIFIER CIRCUIT |
OMI TADAHIRO
SHIBATA SUNAO
CANON KK