| 摘要 |
An active load circuit including a current mirror circuit used for a load to a differential amplifier, an output transistor outputting the amplified signal in response to the differential input to the differential amplifier, and a constant current source. The current mirror circuit includes a pair of load transistors and a third transistor provided to improve the circuit stability and the amplification factor. The collector of the output transistor is connected to the emitter of the third transistor to further improve the circuit stability and the amplification factor.
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