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:
Dec. 10, 2002
Filed:
May. 22, 2001
Allan Olson, Spånga, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
To compensate for temperature dependent variations and process variations in surface resistance of a main resistor (R ) on a chip ( ), one or more compensating resistors (R , R . . . R ) can be connected in series with the first resistor (R ) via normally open switches (SR , SR . . . SR ). The switches are closed to connect one or more of the compensating resistors (R , R . . . SR ) in series with the main resistor (R ) in response to whether the voltage across resistors (R , R . . . R ) produced on the chip ( ) in the same process and proportional to the compensating resistors (R , R . . . R ) is higher or lower than a fixed reference voltage (VR ).