Low-noise high speed differential amplifier and a method to achieve a low-noise hochgeschwindigkeitsverstaerkung of a differential input signal

摘要

a source powered differentialverstu00e4rker with common base has both a high frequency and a low-noise operation by beginning with a pair of source - and two - jfets (1, 2), the emitter of a pair of npn - eingangstransistoren (6, 7), and are the bases with each other and with a vorspannungsschaltung (8) are connected.the collectors of the npn transistors (6, 7), each with a corresponding lastvorrichtung (4, 5), and a corresponding receipt of a ausgangsverstu00e4rkerstufe (3).the vorspannungsschaltung (8) includes a power source (9) and a pair of diodes verschalteten npn transistors (10, 11) whose bases and collectors of the power source (9) and to the bases of the eingangstransistoren (6, 7) are connected.the emitters of the npn transistors and diodes verschalteten (10, 11) are a pair of important source and two - jfets (12, 13) connected to the gates of the channels (16, 17) are connected.