Common-base, source-driven differential amplifier

Details Common-base, source-driven differential amplifier Common-base, source-driven differential amplifier

1989-01-17

1990-02-13

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330258, 330261, 330300, H03F 345

Patent

active

049010310

ABSTRACT:
A common-base, source-driven differential amplifier achieves both high speed operation and low noise operation by providing an input stage including a pair of source follower JFETs that drive emitters of a pair of NPN input transistors having their bases connected together and to a bias circuit. The collectors of the NPN transistors each are connected to a corresponding load device and to a corresponding input of an output amplifier stage. The bias circuit includes a current source and a pair of diode-connected NPN transistors having their bases and collectors connected to the current source and to the bases of the input transistors. The emitters of the diode-connected NPN transistors are connected to sources of a second pair of source follower JFETs, the gates of which are connected to the input terminals.

REFERENCES:
patent: 3644838 (1972-02-01), Graf
patent: 3873933 (1975-03-01), Wheatley, Jr.
patent: 4068184 (1978-01-01), Ahmed
patent: 4194166 (1980-03-01), Sakai et al.
patent: 4462002 (1984-07-01), Schade, Jr.
patent: 4472648 (1984-09-01), Prentice
patent: 4634993 (1987-01-01), Koen

Affiliated with

Also associated with

Rating

Common-base, source-driven differential amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Common-base, source-driven differential amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Common-base, source-driven differential amplifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1170903