| 摘要 |
PURPOSE:To keep the operating range of the input and output voltage almost the same each other, by obtaining the output from the differential amplifier taking the p-type FET as the input FET and that taking the n-type FET as the input FET. CONSTITUTION:The first differential amplifying circuits A, B, C, D have the n- channel MOSFET as the input, and the second differential amplifying circuits A', B', C', D' have the p-channel MOSFET as the input. The output is differentially picked up from both the differential amplifiers. The circuits A, B, C, D have the region not operating to the ground voltage by the threshold voltage of the n- channel MOSFET, and the circuits A', B', C', D' have the region not operating to the power supply voltage by the threshold voltage of the p-channel MOSFET. Then, to obtain the output from both the differential amplifying circuits, the operation of both differential amplifiers is compensated each other, enabling to extend the operation voltage range. |
