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:
Oct. 15, 1991
Filed:
Jul. 23, 1990
Michael J Gay, Vaud, CH;
Motorola Inc., Schaumburg, IL (US);
Abstract
The invention relates to a current mirror circuit (28) comprising: an input node (29); a first simple current mirror (30) of a first type, such as pnp bipolar technology, having an input coupled to said input node (29) and an output; a second simple current mirror (32) of a second semiconductor type, such as npn bipolar technology, having an input coupled to said output of said first simple current mirror and an output; a third simple current mirror (34) of said first semiconductor type having an input coupled to said output of said second simple current mirror and an output coupled to said input node (29); and an output node (31) coupled to said second simple current mirror (32) so as to receive the sum of the input and output currents of said second simple current mirror flowing in a common terminal thereof.