Resistor value detection circuit

Details Resistor value detection circuit Resistor value detection circuit

2005-08-30

2005-08-30

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Calibration

C324S691000

Reexamination Certificate

active

06937028

ABSTRACT:
A resistor detection circuit configurable for coupling to an external resistor of an integrated circuit or other type of circuit includes at least one internal resistor, and comparison circuitry associated with the internal resistor. The comparison circuitry is operative to generate, based at least in part on a value of the external resistor, an output indicative of a value of the internal resistor. The output generated by the comparison circuitry may comprise an encoded digital output signal representative of the value of the internal resistor.

REFERENCES:
patent: 5831849 (1998-11-01), Matsui
patent: 6753738 (2004-06-01), Baird
U.S. Appl. No. 10/452,661, filed May 30, 2003, M.A. Tan et al., “Reduced Complexity Linear Phase Detector”.
U.S. Appl. No. 10/452,657, filed May 30, 2003, G.A. DeVeirman et al., “Phase-Locked Loop with Loop Select Signal Based Switching Between Frequency Detection and Phase Detection”.
U.S. Appl. No. 10/452,091, filed May 30, 2003, M.A. Tan, “Programmable Voltage-Controlled Oscillator with Self-Calibration Feature”.

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