Patent ID: 9143102
Filing Date: 2015-09-22
Classification: G09G,H03F

Abstract:
1. An operational amplifier circuit comprising: a first differential amplifier section comprising a P-type differential pair of P-type transistors; a second differential amplifier section comprising an N-type differential pair of N-type transistors; an intermediate stage connected with outputs of said first and second differential amplifier sections and comprising a first current mirror circuit of P-type transistors, and a second current mirror circuit of N-type transistors; and an output stage configured to amplify a power of an output of said intermediate stage, wherein said first differential amplifier section comprises a first current source and a first capacitor between sources of said P-type transistors of said P-type differential pair and a positive side power supply voltage, and wherein said second differential amplifier section comprises a second current source and a second capacitor between sources of said N-type transistors of said N-type differential pair and a negative side power supply voltage.