Sensor for detecting a position of a donor element

The invention relates to a sensor (4) for detecting a position of a sensor element (37) that makes a dependent on the position of physical quantity (50) comprising a transducer (48) for converting the physical quantity (50) into an electrical sensor signal, a circuit (38) on a wiring substrate (42) for receiving the sensor signal from the transducer (48) and outputting a the transmitter signal corresponding measurement signal, and a protective ground (64), which surrounds the transducer (48) and the wiring substrate (42) at least partially and so holds the transducer (48) on the wiring substrate (42).