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:
Feb. 03, 2004
Filed:
Jun. 06, 2003
Pierangelo Confalonieri, Caponago, IT;
Marco Zamprogno, Cesano Maderno, IT;
Angelo Nagari, Cilavegna, IT;
STMicroeletronics S.r.l., Agrate Brianza, IT;
Abstract
An analog to digital converter includes first and second converter segments having respective first and second arrays of binary weighted capacitors. Each capacitor of the first segment has a first electrode connected to a first common node and a second electrode connected through respective switches to one of a first reference voltage terminal and an input terminal. Each capacitor of the second segment has a first electrode connected to a second common node and a second electrode connected through respective switches to one of the first reference voltage terminal and the input terminal. The converter includes a coupling capacitor connected between the first and second common nodes and capacitance means connected between the first common node and a reference voltage terminal. The coupling capacitor and capacitance means have capacitances, C and C respectively, that substantially satisfy the relationship: (2 −1)·C −C =2 ·C, where p is the number of bits coded in the first converter segment and C is the unit capacitance.