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:
Jul. 14, 1998
Filed:
Nov. 01, 1996
Jerry T Bolton, Jr, Plantation, FL (US);
Frederick L Martin, Plantation, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A temperature sensing apparatus (200), includes a temperature sensor (220), a current source (203), and a temperature independent voltage source (240, 250). The current source (203) provides a biasing current to the temperature sensor (220), and the voltage source (240, 250) is programmable to adjust the output of the temperature sensor (220). Preferably, the voltage source (240, 250) includes a variable current source (240) and a resistive element (250) with counterbalanced temperature coefficients, and the bias current source (203) is selected to have a counterbalancing temperature coefficient to that of the resistive element (250).