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. 14, 1977
Filed:
Nov. 13, 1975
Walter Richard Davis, Tempe, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
The amplifier configuration includes a double-to-single ended converter having two interconnected portions, each having three signal paths. Two of the signal paths include transistors of a first conductivity type having main electrodes coupled between one of the output terminals of a differential amplifier and a power supply conductor. The other path includes a transistor of the second conductivity type having a control electrode coupled to one of the differential amplifier output terminals and main electrodes coupled between power supply conductors. Identical current sources drive corresponding transistors of each portion. The transistors of the second conductivity type enable quiescent voltages of only one base-to-emitter voltage drop to be developed at each of the output terminals of a differential amplifier to facilitate balance and maximization of the dynamic signal range. The substantially identical configurations of the two portions of the converter enable substantially identical quiescent currents to be drawn thereby to minimize the differential amplifier input offset voltage.