Low-offset, buffer amplifier

Details Low-offset, buffer amplifier Low-offset, buffer amplifier

1995-09-07

1997-04-22

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330288, 330296, 330299, 330311, H03F 330

Patent

active

056232306

ABSTRACT:
A unity gain or buffer amplifier having a low offset voltage. The amplifier uses two emitter followers of different conductivity types (PNP and NPN) in an up-down emitter or voltage follower configuration to provide high input impedance and low output impedance. By using both PNP and NPN transistors in a current mirror, the base-emitter voltages of the input and output transistors are forced to be substantially the same, reducing the offset voltage. N- and P-channel MOSFETs can be substituted for the NPN and PNP transistors. Single ended and push-pull arrangements are shown.

REFERENCES:
patent: 4103248 (1978-07-01), Idei
patent: 4433305 (1984-02-01), Ozawa et al.
patent: 4639685 (1987-01-01), Saller et al.
patent: 4757275 (1988-07-01), Saller et al.
patent: 5049653 (1991-09-01), Smith et al.
patent: 5212457 (1993-05-01), Frey et al.
patent: 5245222 (1993-09-01), Carobolante
"Bipolar And MOS Analog Integrated Circuit Design" Alan B. Grebene, Micro-Linear Corporation, Sunnyvale, California, John Wiley & Sons Publisher, Copyright 1984, pp. 255, 256 and 261.

Affiliated with

Also associated with

Rating

Low-offset, buffer 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 Low-offset, buffer amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-offset, buffer amplifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-343965