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:
Jul. 03, 2007
Filed:
Sep. 29, 2003
Antti Ruha, Oulu, FI;
Jussi-pekka Tervaluoto, Oulu, FI;
Tarmo Ruotsalainen, Oulu, FI;
Nokia Corporation, Espoo, FI;
Abstract
The invention relates to an active current mode sampling circuit comprising an operational amplifier () and at least one switched capacitor (C). In order to reduce the power consumption of such a circuit, first switching elements (S) switch the switched capacitor (C) between an input and an output of the operational amplifier () during charging phases φ. Further, second switching elements (S) connect the switched capacitor (C) during discharging phases φto a subsequent stage (), in order to provide a charge of the switched capacitor (C) to the subsequent stage (). The invention relates equally to a device () comprising such a sampling circuit and to a method of operating such a sampling circuit.