| 摘要 |
A differential amplifier having reduced even-order non-linearity is provided that comprises a differential amplifier and an analog voltage compensation circuit that is coupled to one of the input ports to the differential amplifier so as to provide an analog compensation voltage to that input port so as to reduce the imbalance in the differential amplifier. In a preferred embodiment of the present invention, the analog voltage compensation circuit comprises a transconductance amplifier that is coupled between the output of the differential amplifier and one of the inputs of the differential amplifier which may be used to sense the effect of the imbalance on the output of the differential amplifier, and a direct current voltage source coupled to each of the inputs to the differential amplifier.
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