A device comprising: a receiver circuit (110, 410) having a first comparator circuit (112, 412), a second comparator circuit (114, 414) and a detection circuit, wherein the receiver circuit is configured to receive a differential modulated signal comprising a first differential input signal and a second differential input signal via a first differential input line and a second differential input line respectively, and the first comparator circuit (112, 412) comprises a non-inverting input connected to the first differential input line and an inverting input connected to the second differential input line such that the first comparator circuit is configured to detect the absence of a first signal state of the differential modulated signal, the second comparator circuit (114, 414) comprises a non-inverting input connected to the second differential input line and an inverting input connected to the first differential input line such that the second comparator circuit is configured to detect the absence of a second signal state of the differential modulated signal, and wherein the detection circuit is configured, based on output signals of the first and second comparators, to determine the absence of a data signal in the modulated signal in response to the absence of both the first signal state and the second signal state in order to demodulate the modulated signal and provide a demodulated data signal. a receiver circuit (110, 410) having a first comparator circuit (112, 412), a second comparator circuit (114, 414) and a detection circuit, wherein the receiver circuit is configured to receive a differential modulated signal comprising a first differential input signal and a second differential input signal via a first differential input line and a second differential input line respectively, and the first comparator circuit (112, 412) comprises a non-inverting input connected to the first differential input line and an inverting input connected to the second differential input line such that the first comparator circuit is configured to detect the absence of a first signal state of the differential modulated signal, the second comparator circuit (114, 414) comprises a non-inverting input connected to the second differential input line and an inverting input connected to the first differential input line such that the second comparator circuit is configured to detect the absence of a second signal state of the differential modulated signal, and wherein the detection circuit is configured, based on output signals of the first and second comparators, to determine the absence of a data signal in the modulated signal in response to the absence of both the first signal state and the second signal state in order to demodulate the modulated signal and provide a demodulated data signal. wherein the receiver circuit is configured to receive a differential modulated signal comprising a first differential input signal and a second differential input signal via a first differential input line and a second differential input line respectively, and the first comparator circuit (112, 412) comprises a non-inverting input connected to the first differential input line and an inverting input connected to the second differential input line such that the first comparator circuit is configured to detect the absence of a first signal state of the differential modulated signal, the second comparator circuit (114, 414) comprises a non-inverting input connected to the second differential input line and an inverting input connected to the first differential input line such that the second comparator circuit is configured to detect the absence of a second signal state of the differential modulated signal, and wherein the detection circuit is configured, based on output signals of the first and second comparators, to determine the absence of a data signal in the modulated signal in response to the absence of both the first signal state and the second signal state in order to demodulate the modulated signal and provide a demodulated data signal. the first comparator circuit (112, 412) comprises a non-inverting input connected to the first differential input line and an inverting input connected to the second differential input line such that the first comparator circuit is configured to detect the absence of a first signal state of the differential modulated signal, the second comparator circuit (114, 414) comprises a non-inverting input connected to the second differential input line and an inverting input connected to the first differential input line such that the second comparator circuit is configured to detect the absence of a second signal state of the differential modulated signal, and wherein the detection circuit is configured, based on output signals of the first and second comparators, to determine the absence of a data signal in the modulated signal in response to the absence of both the first signal state and the second signal state in order to demodulate the modulated signal and provide a demodulated data signal.