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. 03, 1986
Filed:
Feb. 22, 1983
Applicant:
Inventor:
Robert A Blauschild, Los Altos, CA (US);
Assignee:
Signetics Corporation, Sunnyvale, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
3403 / ; 330100 ; 3403 / ; 3403 / ;
Abstract
An absolute-value analog-to-digital converter containing a chain of matched main absolute-value differential amplifiers (A.sub.1 -A.sub.N) has a gain control for regulating the gain of each main amplifier utilizing an auxiliary absolute-value differential amplifier (A.sub.GC) matched to the main amplifiers. An offset control in the converter drives the offsets of the amplifiers toward zero by using a further absolute-value differential amplifier (A.sub.OC) matched to the other amplifiers. The gain and offset control are implemented with suitable feedback circuitry.