A kind of measuring method of CMOS inverter MOS threshold voltages

The present invention proposes a kind of measuring method of CMOS inverter MOS threshold voltages, can not realize that step is while measure the technical problem for having encapsulated NMOS threshold voltages and PMOS threshold voltages inside CMOS inverter for solving prior art：Direct voltage source is that CMOS inverter applies DC voltage, and synchronous signal generator is that CMOS inverter applies pulse signal；Dual channel oscilloscope gathers the input voltage and output voltage of CMOS inverter simultaneously；Draw the quiescent voltage transmission curve of CMOS inverter a cycle；Calculate the gain of quiescent voltage transmission curve transfer point；Draw conversion dot gains straight line；Calculate the end points that conversion dot gains straight line overlaps interval with quiescent voltage transmission curve；Obtain NMOS threshold voltage V thn With PMOS threshold voltage V thp .Measurement efficiency of the present invention is high, highly versatile, extraction and analysis available for threshold voltage in Design of Digital Circuit and emulation.