Temperature sensor based on a charge-injection cell arrangement

A charge-injection cell-based temperature sensor (1) is provided. The temperature sensor (1) comprises one or more charge-injection cells (3, 9). The temperature sensor (1) is configured to allow charge to be transferred from one or more source capacitors (Cs,n, Cs,p) to one or more output capacitors (Cout,n, Cout,p) once transistors (M1, M2, M3, M4) of the charge-injection cells are enabled to allow current to flow through them. The temperature sensor (1) further comprises a temperature sensing unit (7) configured to determine one or more charge-injection cell output voltage values to thereby derive a temperature value from the one or more first charge-injection cell output voltage values.