| 摘要 |
A Nauta operational transconductance amplifier is provided to remove a common node signal component by performing an improved operational transconductance amplifier. A Nauta operational transconductance amplifier includes a first parallel conversion cell(31), a second parallel conversion cell(32), a first cross feedback conversion cell(35), and a second cross feedback conversion cell(36). The first parallel conversion cell receives a first input voltage through a positive input terminal, and receives a second input voltage through a negative input terminal. The second parallel conversion cell receives the second input voltage from the positive input terminal, and receives the first input voltage through the negative input terminal. A positive input terminal of the first cross feedback conversion cell is coupled to an output terminal of the second parallel conversion cell. A negative input terminal of the first cross feedback conversion cell is coupled to a ground voltage terminal. An output terminal of the first cross feedback conversion cell is coupled to an output terminal of the second parallel conversion cell. A positive input terminal of the second cross feedback conversion cell is coupled to the output terminal of the first parallel conversion cell. A negative input terminal of the second cross feedback conversion cell is coupled to the ground voltage terminal. The output terminal of the second cross feedback conversion cell is coupled to the output terminal of the first parallel conversion cell.
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