PHASE COMPENSATION AMPLIFICATION CIRCUIT, SWITCHED CAPACITOR CIRCUIT USING THE SAME, AND VARIABLE RESISTANCE AMPLIFIER CIRCUIT

摘要

PROBLEM TO BE SOLVED: To enable optimum phase compensation in the case of gain change and prevent distortion of output after amplification and oscillation. SOLUTION: This phase compensation amplification circuit is provided with a differential amplification stage 100 for differential amplification of first and second input signals which are complementary, and first and second output stages 101 and 102 which amplify first and second output signals, respectively, and perform phase compensation. The first and second output stages 101 and 102 have a first and a second phase compensation circuits 104 and 105, respectively, between output ends and input ends. The first and second phase compensation circuits are so constituted that the amount of phase compensation can be changed.