An electronic device for measuring an ion or charged biomolecule concentration in an analyte, the electronic device comprising: an electrode (Snsr) forming an interface with the analyte in which the electrode (Snsr) is immersed in operational use, the interface having an interface temperature, and a resistive heater (Htr) being thermally and capacitively coupled to the electrode (Snsr), the resistive heater (Htr) being configured for setting the interface temperature by controlling a current through the resistive heater (Htr), wherein the resistive heater is provided with signal integrity protection for reducing/preventing capacitive charging of the electrode (Snsr) by the resistive heater (Htr) in response to modulation of the current through the resistive heater (Htr), characterized in that the resistive heater (Htr) comprises two terminals (+UH, - UH) and a conductive path between the terminals (+UH, -UH), and wherein the signal integrity protection comprises a driver circuit coupled to the terminals (+UH, -UH) for controlling the current through the conductive path, wherein the driver circuit is configured for applying a driving pattern of voltage or current pulses to the two terminals (+UH, -UH) of the resistive heater (Htr) to obtain the current, wherein: the driver circuit is configured for applying the voltage or current pulses such that respective potentials of the two terminals (+UH, -UH) are switched synchronously and with opposite polarity with respect to each other, wherein the respective potentials of the terminals (+UH, -UH) are switched with equal amplitude, or the electrode (Snsr) has an electrode potential (φ), and wherein the driver circuit is configured for applying the voltage pulses such that a potential of one of said terminals (+UH), is switched symmetrically around a baseline reference potential while the other one of said terminals is connected to said baseline reference potential and at high-frequency to obtain an electrode signal with high-frequency-modulations, wherein the signal integrity protection further comprises a low-pass filter connected to the electrode (Snsr) and being configured for filtering the high frequency modulations in the electrode signal. an electrode (Snsr) forming an interface with the analyte in which the electrode (Snsr) is immersed in operational use, the interface having an interface temperature, and a resistive heater (Htr) being thermally and capacitively coupled to the electrode (Snsr), the resistive heater (Htr) being configured for setting the interface temperature by controlling a current through the resistive heater (Htr), wherein the resistive heater is provided with signal integrity protection for reducing/preventing capacitive charging of the electrode (Snsr) by the resistive heater (Htr) in response to modulation of the current through the resistive heater (Htr), characterized in that the resistive heater (Htr) comprises two terminals (+UH, - UH) and a conductive path between the terminals (+UH, -UH), and wherein the signal integrity protection comprises a driver circuit coupled to the terminals (+UH, -UH) for controlling the current through the conductive path, wherein the driver circuit is configured for applying a driving pattern of voltage or current pulses to the two terminals (+UH, -UH) of the resistive heater (Htr) to obtain the current, the driver circuit is configured for applying the voltage or current pulses such that respective potentials of the two terminals (+UH, -UH) are switched synchronously and with opposite polarity with respect to each other, wherein the respective potentials of the terminals (+UH, -UH) are switched with equal amplitude, or the electrode (Snsr) has an electrode potential (φ), and wherein the driver circuit is configured for applying the voltage pulses such that a potential of one of said terminals (+UH), is switched symmetrically around a baseline reference potential while the other one of said terminals is connected to said baseline reference potential and at high-frequency to obtain an electrode signal with high-frequency-modulations, wherein the signal integrity protection further comprises a low-pass filter connected to the electrode (Snsr) and being configured for filtering the high frequency modulations in the electrode signal.