Line termination circuit with configurable termination resistance

Abstract

According to an example aspect of the present invention, there is provided a line termination circuit for a signal line pair of a Controller Area Network, CAN, bus. The line termination circuit comprises a resistor assembly (21) and a semiconductor switch unit (22) connected in series between two lines of the line pair, wherein the semiconductor switch unit (22) a comprises at least one field-effect transistor, FET, configured to be controlled to a conducting state or to a non-conducting state with a gate drive voltage at its gate, a switch driver circuit (3) configured to generate the gate drive voltage in response to a driver activation voltage, and a control circuit (4) comprising a termination control input, wherein the control circuit (4) is configured to generate the driver activation voltage at least partially based on a termination control command at the termination control input, the gate drive voltage having a greater voltage swing than the driver activation voltage.