Active loaded bipolar differential amplifier — Free Electronics Illustration

Electronics

Active loaded bipolar differential amplifier

Clean black line-art schematic of an active-loaded bipolar differential amplifier. The input stage is a bipolar differential pair using two NPN transistors in a symmetrical left-right layout, with their emitters joined to a tail-current node and differential input marks at the two bases. At the collectors, one side uses an active load implemented as a current-mirror transistor pair, specifically described as a Wilson current-mirror load, and the schematic also shows a folded cascode stage above the differential pair. Include transistor symbols, supply nodes, and a single-ended output node taken from one collector side.

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