Patent ID: 8350636
Filing Date: 2013-01-08
Classification: G06F,H03K

Abstract:
1. A modulation arrangement comprising: an input for supplying a data signal; a pre-modulator coupled to the input and including a clock pulse input for receiving a pre-clock pulse; a main modulator coupled to the pre-modulator on the input side including a clock pulse input for receiving a main clock pulse, as well as an output for providing a modulated control signal; and a switchable current source for providing a current that is controlled by the modulated control signal at an output of the modulation arrangement, wherein the modulated control signal has a frequency higher than 20 kHz and a width of one bit, wherein the data signal comprises a binary digital signal with a width of n bits, wherein the pre-modulator is coupled to the input in order to provide a first intermediate signal with a width of one bit by modulating a first part of the data signal that comprises a first subset u of low-order bits of the data signal, wherein the main modulator is coupled to the pre-modulator by a combination device, and wherein the combination device comprises an input for receiving the first intermediate signal, another input for receiving a second part of the data signal that comprises a second subset v of higher-order bits of the data signal, and an output for providing a second intermediate signal with a width of m bits, and the output being coupled to the input of the main modulator.