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. 17, 1987
Filed:
Feb. 04, 1986
W Eric Main, Mesa, AR (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An active differential load circuit which receives a differential input signal applied to first and second inputs thereof and produces a single ended output signal at an output thereof while unwanted higher frequency signals applied thereto are filtered from the output without ground currents. The load includes a pair of transistors which have, in the preferred embodiment, their collectors connected together via series connected first and second resistors with the interconnection between the two resistors being connected to the bases of the two transistors. The collectors are also respectively coupled to a pair of current sources and the respective emitters receiving the applied differential input signal. A filter capacitor is coupled between the collectors of the two transistors and efffectively shorts the unwanted higher frequency signals thereacross.