A device, particularly a radar sensor, includes a voltage-controlled oscillator (O) for generating a high-frequency signal with an actual frequency, a circuit arrangement to control the oscillator (O), namely for adjusting a voltage to control the oscillator (O), with each value of a target frequency being allocated to a voltage value of the voltage intended to control the oscillator (O), with the circuit arrangement to control the oscillator (O) including a signal generator (DSP), with at least two signals can be generated by the signal generator, namely two digital signals, two pulse-width modulated signals, or one digital and one pulse-width modulated signal, and that the signal generator (O) includes at least a first output, at which a digital signal can be provided or two digital signals can be provided and/or at least one second output is provided at which a pulse-width modulated signal can be provided.