Shared amplifier circuit

Details Shared amplifier circuit Shared amplifier circuit

2007-12-04

2007-12-04

Williams, Howard L. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S156000

Reexamination Certificate

active

11468507

ABSTRACT:
A circuit has a first amplifier having first positive and negative inputs and a second amplifier having second positive and negative inputs. A first unit is connectable to the first and second inputs of the amplifiers and a second unit is connectable to the first and second inputs of the amplifiers. In a first phase, the first unit is connected to the amplifiers, wherein the positive input of the first amplifier is coupled to the positive input of the second amplifier and the negative input of the first amplifier is coupled to the negative input of the second amplifier. In a second phase, the second unit is connected to the amplifiers, wherein the positive input of the first amplifier is coupled to the negative input of the second amplifier and the negative input of the first amplifier is coupled to the positive input of the second amplifier.

REFERENCES:
patent: 6965258 (2005-11-01), Bogner
patent: 7026968 (2006-04-01), Ali
patent: 7088278 (2006-08-01), Kurose et al.
patent: 2003/0146786 (2003-08-01), Gulati et a.
patent: 2004/0046605 (2004-03-01), Granville
patent: 2004/0150544 (2004-08-01), Mulder
patent: 2005/0104762 (2005-05-01), Dias

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