Maintaining a reference voltage constant against load...

Details Maintaining a reference voltage constant against load... Maintaining a reference voltage constant against load...

2007-12-06

2009-08-11

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S161000

Reexamination Certificate

active

07573414

ABSTRACT:
A voltage source providing a constant reference voltage, independent of load variations at an output terminal. The effective impedance (looking-in impedance) at the output terminal is designed to be independent of frequency of the signals at the output terminal. In an embodiment, the resistance of one of two parallel impedance paths constituting the effective impedance is made equal to the resistance of the other path, and the time constants of both paths are made equal. As a result, the effective impedance is made independent of frequency, and the strength of the reference voltage is maintained constant without exhibiting ringing, DC droop, etc., despite load variations.

REFERENCES:
patent: 6417725 (2002-07-01), Aram et al.
patent: 6753801 (2004-06-01), Rossi
patent: 6933874 (2005-08-01), Pentakota
patent: 7009549 (2006-03-01), Corsi
patent: 2004/0160351 (2004-08-01), Rossi

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