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:
May. 29, 2001
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Ching-Yuh Tsay, Plano, TX (US);
Hugh P. McAdams, McKinney, TX (US);
Wah Kit Loh, Richardson, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/13 ; G06F 1/04 ;
U.S. Cl.
CPC ...
H03K 5/13 ; G06F 1/04 ;
Abstract
A plurality of substrate bias circuits (,and,) are designed to provide a stable substrate reference potential for a variety of operating modes. Only one of the bias circuits is enabled by a control circuit (,) at any time for any operational mode. An on-demand boost bias circuit (,) is enabled whenever a level detector (,) indicates substrate bias has exceeded a predetermined limit during special operating modes such as burn-in or parallel test.