Operation amplifier

Saito Tetsuya (Inventor), Bram Nauta (Inventor)

    Research output: Patent

    17 Downloads (Pure)


    To provide an operation amplifier which improves power source voltage removal ratios while assuring phase compensation characteristics, and therefore can be realized with a small-scale circuit and low power consumption. SOLUTION: The operation amplifier comprises: a differential amplifier circuit 1; an output amplifier circuit 2 connected in series to the poststage of the differential amplifier circuit 1; a phase compensation circuit 3 for performing phase compensation of input/output characteristics; and a current supply circuit 5 for supplying an alternating current to this phase compensation circuit 3. Impedance of the current supply circuit 5 is equal to impedance of the phase compensation circuit 3. The phase compensation circuit 3 has a capacitor Cc1 and a resistor Rc1 connected in series. The current supply circuit 5 has a capacitor Cc2 and a resistor Rc2 connected in series. ;COPYRIGHT: (C)2009,JPO&INPIT
    Original languageEnglish
    Patent numberJP2008306562 (A)
    Publication statusPublished - 18 Dec 2008
    • Operation Amplifier

      Tetsuya, S. & Nauta, B., 14 Dec 2011, Patent No. JP4838760 B2, Priority No. JP20070152878 20070608

      Research output: Patent

      Open Access

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