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:
Oct. 23, 2001
Filed:
Aug. 11, 2000
Applicant:
Inventors:
Ka Y. Leung, Austin, TX (US);
Douglas S. Piasecki, Austin, TX (US);
Assignee:
Cygnal Integrated Products, Inc., Austin, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/16 ;
U.S. Cl.
CPC ...
H03M 1/16 ;
Abstract
A programmable gain circuit for analog-to-digital converter. A switched capacitor network capacitively couples an analog reference from a DAC to a comparator so that the sampled amplitude of the input analog signal can be compared with said analog reference. The ratio of the capacitance of the sampling capacitor to that of the switched capacitor network establishes an effective gain to the analog signal being converted.