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:
Dec. 01, 1987
Filed:
Jun. 30, 1986
William F Davis, Tempe, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An amplifier includes an input stage having first and second differentially coupled transistors for receiving a differential input signal and providing a differential output to third and fourth differentially coupled transistors in the second stage. An RC circuit cooperates with the first and second stages to produce first and second additional pole-zero pairs, one occurring before the unity gain frequency and one occurring after the unity gain frequency. A second RC circuit cooperates with the second stage and introduces a third additional pole-zero pair which occurs below the unity gain frequency. As a result, the gain bandwidth product and the phase margin proximate the unity gain frequency are enhanced.