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:
Apr. 22, 2003
Filed:
Apr. 20, 2001
Douglas S. Olsen, Natick, MA (US);
David Stura, North Billerica, MA (US);
Temptronic Corporation, Sharon, MA (US);
Abstract
An apparatus and method for controlling temperature in a device under test (DUT) having an integrated circuit chip die includes a temperature sensing device, such as a temperature sensitive diode, integrally formed in the chip die. A sensing circuit senses a signal from the diode indicative of temperature of the chip die. The sensing circuit can be part of a testing circuit in a system being used to test the DUT. The sensing circuit sends a control signal to a temperature control system used to control the temperature of a DUT temperature control medium. The temperature control medium can be, for example, a stream of temperature-controlled air directed onto the package of the DUT. In response to the control signal, the temperature control system controls the temperature of the air at a desired temperature to control the temperature of the DUT.