Calibration circuit for resistance component

Details Calibration circuit for resistance component Calibration circuit for resistance component

2007-01-25

2009-02-03

Gutierrez, Diego (Department: 2831)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Calibration

C326S030000, C702S085000, C702S090000

Reexamination Certificate

active

07486085

ABSTRACT:
A calibration circuit including a plurality of first resistance components, a plurality of second resistance components, and a first feedback system is provided. The first feedback system selects M1first resistance components and N1second resistance components so that a first combination of the M1first resistance components and the N1second resistance components substantially matches the impedance of a first resistor. The first feedback system selects M2first resistance components and N2second resistance components so that a second combination of the M2first resistance components and the N2second resistance components substantially matches the impedance of the first resistor. Based on the values of M1, N1, M2, N2, and a target impedance, the first feedback system generates a first set of calibration signals for a plurality of third resistance components and generates a second set of calibration signals for a plurality of fourth resistance components.

REFERENCES:
patent: 5926031 (1999-07-01), Wallace et al.
patent: 6064224 (2000-05-01), Esch et al.
patent: 6157206 (2000-12-01), Taylor et al.
patent: 7193431 (2007-03-01), Miyake et al.
patent: 7408378 (2008-08-01), Best et al.

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