Importance

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Abstract

A capacitive touch-sensitive panel, including a plurality of sense electrodes biased at a fixed voltage relative to a common guard electrode, and a measuring circuit comprising: a power management integrated circuit comprising a voltage source generating a modulation voltage that is available at a guard terminal of the power management integrated circuit that is in electric connection with the guard electrode, one or more slave integrated circuits, each connected to a plurality of sense electrodes and comprising a Capacity-to-Digital converter or a plurality of Capacity-to-Digital converters that are operatively arranged for generating digital measure codes representing the instantaneous electric capacity of sense electrodes; floating communication means allowing transfer of command, timing signals and/or measure codes between the master integrated circuit and said slave integrated circuits.

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First Claim