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. 12, 2002
Filed:
Nov. 17, 2000
Yasuhiro Tonda, Kanagawa, JP;
NEC Corporation, Tokyo, JP;
Abstract
A band-gap reference circuit generates and supplies a predetermined stable voltage (VREF). The band-gap reference circuit is comprised of three major circuits: a start-up circuit, which is comprised of a start-up transistor that is smaller than each of those in a band-gap circuit which generates a predetermined stable voltage and which outputs a start signal; a signal level converter, which converts said start signal to a second start signal that is supplied to said start-up transistor; and the band-gap circuit. The start-up transistor has a threshold voltage with its absolute value being smaller than each of those of the threshold voltages of transistors in said band-gap circuit. Moreover, the start-up transistor is (1/n) the channel length of said reference-voltage generation transistor and (1/n) the channel width of said reference-voltage generation transistor, where said n denotes a certain positive number larger than 1.