Differential amplifier transistor level generic — Free Electronics Illustration

Electronics

Differential amplifier transistor level generic

Transistor-level schematic of a symmetric differential amplifier stage in clean black circuit-diagram style. Two matched transistors are placed side by side in a mirror-symmetric layout, with their sources or emitters joined to a shared tail current source or common tail node below. The two input terminals connect to the transistor gates or bases on the left and right branches. Above the pair, the drains or collectors connect to load elements such as active loads or collector resistors, and the output is taken from one or both upper nodes. The drawing emphasizes a balanced analog-circuit appearance with matched left-right structure while remaining generic across transistor types.

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