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:
Sep. 20, 2005
Filed:
May. 20, 2003
Kent D. Layton, Lehi, UT (US);
Kent D. Layton, Lehi, UT (US);
AMI Semiconductor, Inc., Pocatello, ID (US);
Abstract
A current measurement circuit that measures current passing through two loads. The circuit includes a differential output transconductance amplifier. One current output terminal pf the amplifier receives the current from the first load with the first voltage input terminal coupled to that current output terminal. The second current output terminal provides a current to the second load with the second voltage input terminal coupled to the second current output terminal with the current provided at the second output terminal being approximately equal to the current received at the first current output terminal. The transconductance amplifier provides a copy current on the third current output terminal this is approximately equal to at least one of the other output currents. That copy current is then directly measured, rather than the actual current passing through the loads.