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:
Feb. 05, 1991
Filed:
Sep. 26, 1989
Peter Real, Groveland, MA (US);
David H Robertson, Somerville, MA (US);
Theodore Tewksbury, Boston, MA (US);
Christopher W Mangelsdorf, Reading, MA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A reference voltage distribution system for use on an integrated circuit to distribute, from a reference voltage input, to remote locations on the chip, precise images of the reference voltage. The system comprises (1) a reference buffer located proximate a reference input connection and (2) a plurality of remote generator blocks, one located at each of the remotely-located sub-blocks or circuits requiring an image of the reference voltage. The reference buffer generates from the reference voltage a number of precision currents, each proportional to the reference voltage. These precision currents are routed to the remote generator blocks. Each remote generator block converts its precision current into a precision reference voltage for local use. These latter reference voltages may be the same as or different from the reference voltage supplied to chip itself.