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. 17, 1997
Filed:
Jul. 05, 1995
Bram Nauta, Eindhoven, NL;
Arnoldus G Venes, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A folding stage for a folding analog-to-digital converter includes a plurality of consecutive reference terminals providing ascending different reference voltages, a first summing node, a second summing node and a first output node. A plurality of differentially coupled transistor pairs wherein each of the pairs has a first transistor having a main current path and a control electrode which is coupled to an input terminal (IT) for receiving an input voltage to be folded and a second transistor having a main current path and a control electrode which is coupled to a respective one of the consecutive reference terminals. The main current path of the first transistor of the consecutive transistor pairs is coupled alternately to the first summing node and the second summing node, and the main current path of the associated second transistor is coupled alternately to the second summing node and the first summing node. A current-to-voltage converter includes a first resistor connected between the first output node and the first summing node to provide a first output voltage.