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:
Nov. 13, 1990
Filed:
Dec. 19, 1989
Applicant:
Inventors:
Stephane Barbu, Caen, FR;
Richard Morisson, Caen, FR;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323317 ; 323315 ; 330257 ; 330288 ;
Abstract
An integrated circuit comprising a current generator which is switchable to at least two modes. A first stage comprises a current mirror (T.sub.3, T.sub.4) having two branches. A differential pair second stage (T.sub.1, T.sub.2) is either in a balanced state (current output zero) or in an unbalanced state (current source R.sub.10, T.sub.10 supplying a current I.sub.1). In the balanced state a second current source (R.sub.20, T.sub.20) supplies a current which maintains the currents in the two branches of the current mirror constant.