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. 18, 1995
Filed:
Nov. 29, 1993
Applicant:
Inventor:
Charles H Lucas, Fair Oaks, CA (US);
Assignee:
Intel Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
327546 ; 327545 ; 327540 ; 327541 ; 327543 ;
Abstract
A simple CMOS voltage reference circuit develops a reference voltage from the sum of the threshold voltages of a pair of complementary devices. In a p-type substrate a p-channel device is formed in an isolated n-type well, with the well tied to the source at the reference node. The drain is coupled to the drain of a complementary n-channel device. An additional p-channel device functions as a current source. The voltage reference circuit may be advantageously cascaded to improve stability and insensitivity to the power supply voltage.