Non-contact integrated circuit comprising a charge pump

Details Non-contact integrated circuit comprising a charge pump Non-contact integrated circuit comprising a charge pump

G - Physics

06

K

G06K 7/00 (2006.01) G06K 19/07 (2006.01)

Patent

CA 2262995

An integrated circuit (30) for non-contact operation by means of at least one coil (L) forming a tuned resonant circuit with a tuning capacitor (CA), including a charge pump (10) with two clock inputs (E1, E2), wherein the clock inputs (E1, E2) of the charge pump (10) are constantly connected to the terminals of the coil (L), at least during the periods of non-contact operation of the integrated circuit, whereby the charge pump, seen from the clock inputs thereof, is a constant component of the tuning capacitor of the tuned resonant circuit.

Circuit intégré (30) pouvant fonctionner sans contact au moyen d'au moins une bobine (L) formant avec une capacité d'accord (CA) un circuit résonant accordé, comprenant une pompe de charges (10) à deux entrées d'horloge (E1, E2), dans lequel, au moins pendant des périodes de fonctionnement sans contact du circuit intégré, les entrées d'horloge (E1, E2) de la pompe de charges (10) sont connectées en permanence aux bornes de la bobine (L), de telle sorte que la pompe de charges vue de ses entrées d'horloge constitue une composante permanente de la capacité d'accord du circuit résonant accordé.

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