LINEAR DETECTOR, LOGARITHMIC CONVERTER, LOGARITHMIC DETECTOR, AND LOGARITHMIC DETECTION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a logarithmic detector capable of achieving high sensitivity and miniaturization.SOLUTION: A linear detector 1 comprises: an NMOS detector using diode connection of native transistors NM1, NM2; and a load resistance R1. A logarithmic converter 2 comprises: a negative transistor NM3; a diode D1 serving as a load; and a source resistance R2. The linear detector 1 and the logarithmic converter 2 are connected in a tandem connection manner to form a logarithmic detector.