Temperature sensing circuit with shut off

A radio frequency module comprising a temperature sensor circuit for sensing the temperature of an electronic component, the temperature sensor circuit having:

• a first transistor configured to be thermally isolated from the electronic component and being configured to sense an ambient temperature;
• a second transistor configured to be thermally linked to the electronic component and being configured to sense a temperature at the electronic component, the temperature sensor circuit being a differential circuit having a first path and a second path with the first and second transistors being arranged on the first and second paths of the differential circuit, respectively, such that the temperature sensor circuit generates an output voltage inversely proportional to a temperature difference between the ambient temperature and the temperature at the electronic component;
• and
• a shut-off switch configured to activate or deactivate the temperature sensor circuit.

A wireless communication device comprising a temperature sensor circuit for sensing the temperature of an electronic component, the temperature sensor circuit having:

• a first transistor configured to be thermally isolated from the electronic component and being configured to sense an ambient temperature;
• a second transistor configured to be thermally linked to the electronic component and being configured to sense a temperature at the electronic component, the temperature sensor circuit being a differential circuit having a first path and a second path with the first and second transistors being arranged on the first and second paths of the differential circuit, respectively, such that the temperature sensor circuit generates an output voltage inversely proportional to a temperature difference between the ambient temperature and the temperature at the electronic component;
• and
• a shut-off switch configured to activate or deactivate the temperature sensor circuit.