BIAS CURRENT CONTROLLED AMPLIFIER CIRCUIT

摘要

PROBLEM TO BE SOLVED: To obtain a current controlled electronic circuit that stores a current to extend a storage time without using a large capacitor and to obtain a current controlled electronic circuit that configures an amplifier needing no bias circuit. SOLUTION: The amplifier circuit is configured by alternately connecting a plurality of series circuits 5 each consisting of a P-channel MOS respectively 1 whose gate is connected to its drain, whose source is connected to a power supply and whose drain is connected to an output terminal A respectively and of an N-channel MOS TR 2 whose gate is connected to an input terminal B, whose drain is connected to the output terminal A and whose source is connected to ground and a plurality of series circuits 6 each consisting of a P- channel MOS TR 3 whose gate is connected to the input terminal D and whose source and drain are respectively connected to the power supply and an output terminal C and of an N-channel MOS TR 4 whose gate is connected to the output terminal C and its drain and whose source is connected to ground. In this case, the bias current controlled amplifier circuit is realized by inserting a current source in parallel with the series circuits 5 and 6 to suppress a bias current from being amplified.