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:
Mar. 27, 2007
Filed:
Feb. 09, 2006
James P. Hofmeister, Tucson, AZ (US);
Philipp S. Spuhler, Brookline, MA (US);
Bert M. Vermeire, Mesa, AZ (US);
James P. Hofmeister, Tucson, AZ (US);
Philipp S. Spuhler, Brookline, MA (US);
Bert M. Vermeire, Mesa, AZ (US);
Ridgetop Group, Inc., Tucson, AZ (US);
Abstract
A solder-joint detection circuit uses a resistive bridge and a differential detector to detect faults in the solder-joint network both inside and outside the digital electronic package during operation. The resistive bridge is preferably coupled to a high supply voltage used to power the package. Resistors Rand Rare connected in series at a first junction between the high and low supply voltages and a resistor Ris coupled to the high supply voltage and connected in series with the resistance of the solder-network at a second junction. The network is held at a low voltage on the die. The detector compares the sensitivity and detection voltages and outputs a Pass/Fail signal for the solder-joint network.