Low noise and high input dynamic range differential amplifier st

Details Low noise and high input dynamic range differential amplifier st Low noise and high input dynamic range differential amplifier st

1998-03-27

2000-10-24

Shingleton, Michael

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330258, 330261, 330 9, H03F 345

Patent

active

061373621

ABSTRACT:
The present invention relates to a differential stage including two first transistors respectively controlled by two components of a differential input voltage, these transistors being connected to a common current source and forming two differential output branches. The stage includes an auxiliary transistor controlled by the common mode of the differential input voltage and connected to take from each of the output branches a portion of the current established by the common current source.

REFERENCES:
patent: 4612513 (1986-09-01), Seevinck
patent: 4723110 (1988-02-01), Voorman
patent: 4951003 (1990-08-01), De Jager et al.
patent: 5317279 (1994-05-01), Zarabadi et al.
patent: 5406221 (1995-04-01), Samani et al.
patent: 5815039 (1998-09-01), Kimura
French Search Report from French Patent Application 97 04095, filed Mar. 28, 1997.
J. Addis: "Versatile Analogue Chip For Oscilloscope Plug-Ins Part 1", Electronic Engineering, vol. 60, No. 760, Aug. 1988, London GB, pp. 23-28.

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