The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 2001
Filed:
Sep. 10, 1998
Rick Allen Philpott, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system for calibrating analog integrated circuits. Initially, a single calibration circuit is formed integral with a group of analog integrated circuits. A control signal and a calibration signal are generated from the calibration circuit. Next, the control signal and the calibration signal are selectively coupled to an input of a particular analog integrated circuit among the group of analog integrated circuits. The particular analog integrated circuit is then selected for calibration via the control signal. An output of the particular analog integrated circuit is thereafter observed, in response to enabling the particular analog integrated circuit for calibration via the control signal, such that if an output of the particular analog integrated circuit corresponds to the calibration signal, a successful calibration of the particular analog integrated circuit is indicated, thereby permitting the single calibration circuit to generically calibrate a multitude of diverse analog integrated circuits. The output of the particular analog integrated circuit is coupled to an input of the single calibration circuit, and the calibration value is incremented until the particular analog integrated circuit is calibrated, such that upon completion of the calibration, the calibration value comprises a current calibration value associated with the particular analog integrated circuit. In addition, if the output of the particular analog integrated circuit is composed of a logically high value, then an indication is provided that the particular analog integrated circuit has been successfully calibrated.