This work presents the design and dimensioning of of a bandgap voltage reference – BGV – generator with second order compensation. The developed circuit provides a steady voltage at the output, stable to noise, temperature and power source drifts, which functions as a reference voltage for other circuit blocks. The main purpose of the work is to obtain a BGV generator with a voltage of 1.25V and performances which can improve a previous proposed circuit. The FOM that primarily characterize the circuit and that will be the focus of improvement are the PSRR, the TC and the current consumption. The achieved results by the proposed circuit are a PSRR of -81.93 dB, a TC of 2 ppm/ºC and a current consumption of 2.34 mA.