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:
Jun. 28, 2016
Filed:
May. 20, 2014
Analog Devices, Inc., Norwood, MA (US);
Alexandru A. Ciubotaru, Somerset, NJ (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A current amplifier is disclosed. The circuit has differential input and output and can be implemented in CMOS or bipolar integrated-circuit technologies. The input current is injected into a pair of primary branches, and is re-used at the output of the circuit without changing its natural flow, thus contributing to the overall current gain. A pair of secondary branches is connected to the primary branches in such a way as to provide currents proportional to the input currents according to a scaling factor dictated by the geometry of the transistors. The outputs of the secondary branches are cross-coupled relative to the outputs of the primary branches, in this way ensuring maximum current gain by the summing of the primary and secondary signal currents at the circuit output, without consuming additional DC power.