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:
Feb. 25, 1992
Filed:
Oct. 15, 1990
James R Butler, San Jose, CA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A differential input circuit has an input stage with a pair of differentially biased input transistors connected to supply current through respective load impedances, and a gain stage with a second pair of transistors connected to supply additional currents to the load impedances to keep the impedance currents constant over variations in the input voltage levels. A cross-coupled cascode circuit connected between the gain stage transistors and the load impedances compensates for inaccuracies in the load impedance currents which occur during dynamic operation of the circuit, and thus enhances gain, linearity and the current transfer efficiency between the two stages.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile