Operation amplifier

Saito Tetsuya (Inventor), Bram Nauta (Inventor)

    Research output: Patent

    9 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


    Cite this

    Tetsuya, S., & Nauta, B. (2008). Operation amplifier. (Patent No. JP2008306562 (A)).