| 摘要 |
A chopper type comparator is equipped with an input switching circuit 1 that switches between an input voltage VIN and a reference voltage VRE, a capacitor C1, and an amplification circuit 11 that is formed from amplifiers (CMOS inverters) 12. The input switching circuit 1 is provided with a switch CT1 that turns on and off the input voltage VIN, and a switch CT2 that turns on and off the reference voltage VRE. Rising and falling of control signals to the P channel and N channel transistors of the switches CT1 and CT2 are simultaneously conducted, and an intersection of the rising and falling sections thereof coincide with a center of the amplitude of the drive signals.
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