Current sense amplifier for voltage converter

Details Current sense amplifier for voltage converter Current sense amplifier for voltage converter

2008-09-18

2009-11-17

Mottola, Steven J (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including temperature compensation means

C330S129000

Reexamination Certificate

active

07619477

ABSTRACT:
A thermal calibration circuit for adjusting the gain of a variable gain amplifier, the thermal calibration circuit comprising an interface for receiving a signal that varies with temperature and for providing a signal related to the variation of the temperature; a variable gain amplifier having an input and an output; the signal related to the variation of the temperature being selectively coupled to the input; a circuit at the output of the variable gain amplifier for developing a first current proportional to a difference between a current developed at the output of the variable gain amplifier and a reference current; and the first circuit driving a further circuit to produce a gain control signal for adjusting the gain of the variable gain amplifier.

REFERENCES:
patent: 6677823 (2004-01-01), Terosky et al.
patent: 6894464 (2005-05-01), Zhang
patent: 2006/0001408 (2006-01-01), Southwell et al.
patent: 2007/0064456 (2007-03-01), Schuellein
patent: WO 2005/031955 (2005-04-01), None

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