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:
Jan. 28, 1997
Filed:
Sep. 06, 1994
Oliver Kiehl, Munchen, DE;
Rudolf Koch, Oberhaching, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A current mirror includes first through eighteenth transistors. The load paths of the first and second transistors are in series for carrying an input current to a first supply potential. The control terminals of the first through eighth transistors receive the input current. The load paths of the fourth, third, ninth and tenth transistors are in series between the first and a second supply potential. The third and ninth transistors form a tap being connected to the control terminals of the ninth, tenth, eleventh, twelfth and thirteenth transistors. The load paths of the fifth, sixth, eleventh and fourteenth transistors are in series between the first and second supply potentials. The sixth and eleventh transistors form a tap being connected to the control terminals of the fourteenth through sixteenth transistors. The load paths of the seventeenth, seventh, twelfth and fifteenth transistors are in series between the first and second supply potentials. The seventh and twelfth transistors form a tap being connected to the control terminals of the seventeenth and eighteenth transistors. The load paths of the eighteenth and eighth transistors are in series for tapping a first output current proportional to the input current from the first supply potential. The load paths of the sixteenth and thirteenth transistors are in series for tapping a second output current equal to the first from the second supply potential. The ninth through sixteenth transistors are of one, and the seventeenth, eighteenth and first through eighth transistors being of the other, conduction type.