LEVEL CONVERSION CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a level conversion circuit which allows the signal level of a level conversion output voltage to be less varied regardless of variations of a resistance value of an internal resistance element and an input current resulting from production variations, temperature fluctuation, etc. SOLUTION: The level conversion circuit is provided with; a V1 conversion circuit 2 which takes a reference voltage V1as the input and applies it to a first internal resistance element R1to generate a reference current I1; a level conversion signal output circuit 3 which causes a current I2for level conversion obtained by multiplying the reference current I1generated by the VI conversion circuit 2 to flow to a second internal resistance element R2to convert an input current I0to a level conversion output voltage V2being a voltage signal; and a reference voltage generation circuit 4 which gives the reference voltage V1to the VI conversion circuit 2, and a resistance element R4for generating the reference voltage V1in the reference voltage generation circuit 4 is made of the same material as internal resistance elements R1and R2. COPYRIGHT: (C)2005,JPO&NCIPI