FIELD: radio engineering, communication.
SUBSTANCE: input stage of a high-speed operational amplifier has first (1) and second (2) input transistors whose emitters are connected through corresponding first (3) and second (4) auxiliary resistors to emitters of the first (5) and second (6) output transistors with combined bases, first (7) and second (8) inputs of the device, connected to corresponding bases of the first (1) and second (2) input transistors, third (9) and fourth (10) auxiliary resistors, first (11) and second (12) auxiliary forward-biased p-n junctions, a first (13) current-stabilising two-terminal element, current outputs of the device (14), (15), (16), (17), connected to collectors of input (1), (2) and output (5), (6) transistors.
EFFECT: wider active operating range of the input stage of an operational amplifier for a differential signal owing to new connection elements.
18 dwg
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