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. 29, 1987
Filed:
Feb. 10, 1986
Applicant:
Inventor:
Pietro Erratico, Milan, IT;
Assignee:
SGS Microelettronica S.p.A., Catania, IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03H / ;
U.S. Cl.
CPC ...
307540 ; 307555 ; 307264 ; 307243 ; 333 / ;
Abstract
A low noise, high thermal stability attenuator of the integratable type is disclosed. The attenuator comprises a fixed network of resistive elements, having a plurality of outputs each at a different attenuation level, and a switched amplifier receiving at its input such different attenuation outputs, as well as a control signal which specifies which of the amplifier inputs is to be output. Advantageously, this attenuator may be implemented in several stages, each having different attenuation ranges or steps.