Systems and methods for sense FET calibration

Details Systems and methods for sense FET calibration Systems and methods for sense FET calibration

2006-10-03

2006-10-03

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Calibration

C324S762010

Reexamination Certificate

active

07116113

ABSTRACT:
Systems, methods and circuits for sense circuit calibration. In one particular case, a system is provided that includes a sense circuit, a calibration circuit, and a sample and hold circuit. The sense circuit provides a sense current that is derived from either a reference current or a load current depending upon the operational state. The calibration circuit includes a calibration amplifier electrically coupled to the reference current and to the sense current. The calibration amplifier outputs a calibration signal representing a difference between the reference current and the sense current. The sample and hold circuit is operable to store a value representative of the calibration signal, and useful in forming a calibration offset current applied to the sense current.

REFERENCES:
patent: 2005/0184721 (2005-08-01), Peterson
patent: 2005/0195647 (2005-09-01), Perner

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