VOLTAGE COMPARATOR CIRCUIT AND ANALOG/DIGITAL CONVERTER PROVIDED WITH THE SAME, AND TRANSISTOR THRESHOLD VOLTAGE REVISING METHOD AND TRANSISTOR THRESHOLD CONTROL CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a voltage comparator circuit that can much be simplified, and to provide a compact and high-speed analog/digital converter.;SOLUTION: The voltage comparator circuit 11 of the analog/digital converter has 15 CMOS inverters IV1-IV15, that receive the same analog input voltage Vin, and have different threshold values. The 15 sets of the CMOS inverters IV1-IV15 comprise transistors having different threshold voltages.;COPYRIGHT: (C)2003,JPO