The bandgap reference circuit (BG) comprises a voltage generator (BC), a supply circuit (SC) and a control loop. The voltage generator (BC) comprises a first and a second branch and is configured to produce a reference voltage (vref) with a temperature coefficient lower than a given threshold. The supply circuit (SC) is configured to provide a first current to the first branch and a second current to the second branch of the voltage generator (BC). The control loop comprises a transconductance amplifier (OTA) configured and arranged to provide an output signal representative of a difference between a first voltage of the first branch and a second voltage of the second branch. Furthermore, the control loop comprises a filter coupled with an output of the transconductance amplifier (OTA). The filter provides an output signal controlling the provided first current and second current of the current source.