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. 31, 1985
Filed:
Jun. 27, 1984
Applicant:
Inventors:
Kenneth A Hansen, Bedford, TX (US);
Gary A Kurtzman, Euless, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330 51 ; 330 86 ; 330148 ; 330282 ;
Abstract
A buffer is described which includes two gain stages which may be constructed of MOS devices, the first stage having a low noise characteristic and the second stage having a high current drive capability. The second stage is switched in circuit only when high current drive is needed so that the buffer otherwise exhibits the low noise characteristics of the first stage. A feedback network is also switched in circuit in a manner that maintains the buffer's loop gain substantially constant, whether or not the high current drive stage is in circuit.