Mode selection amplifier circuit usable in a signal...

Details Mode selection amplifier circuit usable in a signal... Mode selection amplifier circuit usable in a signal...

2006-05-24

2008-08-05

Lateef, Marvin (Department: 4146)

Amplifiers

Sum and difference amplifiers

C330S147000

Reexamination Certificate

active

07408406

ABSTRACT:
A mode selection amplifier circuit has multiple differential amplifier circuits coupled to receive input signals A, B and C. Each differential amplifier circuit is selectively operable for generating a signal output representative of an output mode with the output mode of each differential amplifier circuit selected from one of algebraic combinations of the signal inputs A−C, B−C, A−B and (A+B)/2−C. The mode selection amplifier circuit is usable in a signal acquisition probe for providing various signal output modes to a measurement test instrument.

REFERENCES:
patent: 3512084 (1970-05-01), Roberts et al.
patent: 4591740 (1986-05-01), Anderson et al.
patent: 4683441 (1987-07-01), Naylor
patent: 5272449 (1993-12-01), Izawa
patent: 5977828 (1999-11-01), Hu
patent: 5982230 (1999-11-01), MacBeth
patent: 6639397 (2003-10-01), Roth et al.
patent: 2005/0114047 (2005-05-01), McTigue
patent: 2006/0022741 (2006-02-01), Hopkins
“Handbook of Analog Circuit Design”, Dennis L. Feucht, Copyright 1990, Academic Press, Inc., book page, Fig. 10.56.

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