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:
Jan. 13, 2004
Filed:
Sep. 13, 2002
John Anthony Cleary, Fermoy, IE;
Analog Devices, Inc., Norwood, MA (US);
Abstract
A programmable non-volatile data storage calibration circuit stores a calibration code for a temperature sensor circuit of an IC, comprising a programmable array of addressable bi-state, bi-stable first circuit elements each comprising a fusible resistor. A power supply controlled by a data input signal addresses the first circuit elements to be switched from a first to a second state in the fusible resistor state, the supply, and a clock signal applied to an I/O terminal clocks the data input signal to the interpreter circuit. The interpreter circuit sequentially selects and addresses the first circuit elements and enables switching of the first circuit elements when the supply voltage is at its maximum, blowing a selected fusible resistor. A second, similar circuit element is switched to its second state after programming the calibration circuit to prevent its further programming.