| 摘要 |
A differential circuit is provided, which makes it possible to realize an ideal linear behavior with respect to an input signal. This circuit includes a voltage-current converter, a current-voltage converter, and a triple-tail cell. The voltage-current converter converts an initial input voltage to generate first and second differential output currents. The current-voltage converter converts the first and second output currents to generate first and second output voltages. The triple-tail cell has first, second, and third transistors driven by a common constant current. The first and second transistors form a differential pair. The first and second output voltages are differentially applied across input ends of the differential pair. The third transistor serves as a bypass transistor for the common constant current. An input end of the third transistor is applied with a bias voltage. An output current of the differential circuit is derived from output ends of the differential pair. This circuit is preferably used for a multiplier.
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