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1. A fluxgate current transducer including a control circuit and a fluxgate measuring device comprising a fluxgate magnetic field detector, the fluxgate magnetic field detector comprising a saturable soft magnetic core surrounded by an excitation coil, the control circuit comprising an excitation coil drive circuit connected to the excitation coil and a controller connected to the excitation coil drive circuit configured to generate an alternating excitation current Ifx to alternatingly saturate the soft magnetic core, wherein the controller is in the form of a FPGA (Field Programmable Gate Array) comprising a plurality of input circuit portions, each comprising a 1 bit sigma delta analog-to-digital converter (ADC) connected to the excitation coil to receive a measurement signal output by the excitation coil, each input circuit portion comprising a LVDS (low voltage differential signaling) comparator input of the FPGA, wherein bit stream output signals of said 1 bit sigma delta analog-to-digital converters are added before being fed into a digital filter.
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