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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.:

US 9618635 B1

PDFFull Text
Date of Patent:
Apr. 11, 2017

Filed:

Jun. 21, 2012

Integrated radiation sensitive circuit

Applicant:

Paul S. Fechner, Plymouth, MN (US);

Inventor:

Paul S. Fechner, Plymouth, MN (US);

Assignee:

Honeywell International Inc., Morris Plains, NJ (US);

Attorney:

Shumaker & Sieffert, P.A.

Primary Examiner:

David Porta

Assistant Examiner:

Carolyn Igyarto

Int. Cl.
CPC ...
G01T 1/24 (2006.01); G01T 7/00 (2006.01); G01J 1/44 (2006.01); G01T 1/02 (2006.01); H01L 31/02 (2006.01); H01L 27/11517 (2017.01); H01L 29/788 (2006.01); H01L 31/10 (2006.01); G01J 1/46 (2006.01); G01J 5/24 (2006.01); G01J 5/34 (2006.01); G01T 1/17 (2006.01); H01L 21/77 (2017.01); H01L 27/14 (2006.01); H01L 31/09 (2006.01); H01L 31/103 (2006.01); H01L 31/115 (2006.01); H01L 27/115 (2017.01); H01L 27/02 (2006.01); H01L 27/144 (2006.01); H01L 29/00 (2006.01); H01L 31/00 (2006.01);
U.S. Cl.
CPC ...
G01T 7/005 (2013.01); G01J 1/44 (2013.01); G01T 1/026 (2013.01); H01L 27/11517 (2013.01); H01L 29/788 (2013.01); H01L 31/02005 (2013.01); H01L 31/02019 (2013.01); H01L 31/10 (2013.01); G01J 1/46 (2013.01); G01J 5/24 (2013.01); G01J 5/34 (2013.01); G01T 1/17 (2013.01); H01L 21/77 (2013.01); H01L 27/02 (2013.01); H01L 27/115 (2013.01); H01L 27/14 (2013.01); H01L 27/144 (2013.01); H01L 29/00 (2013.01); H01L 31/00 (2013.01); H01L 31/09 (2013.01); H01L 31/103 (2013.01); H01L 31/115 (2013.01);
Abstract

This disclosure is directed to devices, integrated circuits, and methods for sensing radiation. In one example, a device includes an oscillator, configured to deliver a signal via an output at intervals defined by an oscillation frequency, and a counter, connected to the output of the oscillator and configured to count a number of times the comparator delivers the output signal. The oscillator includes a radiation-sensitive cell that applies a resistance. The resistance of the radiation-sensitive cell is configured to vary in response to incident radiation, wherein the oscillation frequency varies based at least in part on the resistance of the radiation-sensitive cell.

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