A system comprising a circuit for removing common-mode current from a pair of complementary current signals (I +, I -), and a baseband filter, wherein the pair of complementary current signals (I +, I -) is an output from a digital-to-analog converter, DAC, and is an input to the baseband filter, the baseband filter comprising an operational amplifier, feedback resistors (326, 328) and feedback capacitors (360, 362), the circuit comprising: a generator unit configured to generate a common-mode voltage of the pair of complementary current signals (I +, I -) comprising at least a first current signal and a second current signal; a measurement unit configured to measure and output a difference voltage configured to remove the common-mode current from the first current signal and the second current signal, wherein the difference voltage is based on a difference between the common-mode voltage generated by the generator unit and a common-mode reference voltage (V cm_ref); and first and second current removing units (314, 316) connected to the output of the DAC, the first and second removing units (314, 316) configured to receive a respective one of the first current signal and the second current signal output from the DAC, wherein the difference voltage of the measurement unit is configured to drive the first current removing unit to remove the common-mode current from the first current signal, and drive the second current removing unit to remove the common-mode current from the second current signal, thereby preventing the common-mode current from the first and second current signal from flowing into the baseband filter, wherein the baseband filter is configured to receive the common-mode reference voltage (V cm_ref), wherein the common-mode reference voltage is used as a comparison value to the output common-mode voltage of the baseband filter in an embedded common-mode feedback sensor in an operational amplifier of the baseband filter. a generator unit configured to generate a common-mode voltage of the pair of complementary current signals (I +, I -) comprising at least a first current signal and a second current signal; a measurement unit configured to measure and output a difference voltage configured to remove the common-mode current from the first current signal and the second current signal, wherein the difference voltage is based on a difference between the common-mode voltage generated by the generator unit and a common-mode reference voltage (V cm_ref); and first and second current removing units (314, 316) connected to the output of the DAC, the first and second removing units (314, 316) configured to receive a respective one of the first current signal and the second current signal output from the DAC, wherein the difference voltage of the measurement unit is configured to drive the first current removing unit to remove the common-mode current from the first current signal, and drive the second current removing unit to remove the common-mode current from the second current signal, thereby preventing the common-mode current from the first and second current signal from flowing into the baseband filter, wherein the baseband filter is configured to receive the common-mode reference voltage (V cm_ref), wherein the common-mode reference voltage is used as a comparison value to the output common-mode voltage of the baseband filter in an embedded common-mode feedback sensor in an operational amplifier of the baseband filter.