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. 09, 1987
Filed:
May. 09, 1986
Applicant:
Inventor:
Werner F Thommen, Staefa, CH;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
307353 ; 328151 ;
Abstract
The invention relates to a sample-and-hold circuit arrangement comprising a differential amplifier (5) followed by an inverting amplifier (8). In accordance with the invention there is provided a third amplifier (12) and a capacitor (14) which connects an output of the third amplifier to its input. The inverting amplifier (8) ensures that the voltage on the output (16) of the arrangement is independent of the offset voltage of the differential amplifier (5). Moreover, the capacitor (14) maintains the voltage on the output (16) during a sampling interval at the value which it had in the directly preceding hold interval.