A reference voltage generator is provided. In an example, the reference voltage generator includes a temperature-dependent device, a processing module configured to process a digital representations of first and second voltages derived from the temperature-dependent device and a reference voltage to determine a value, and a digital to analog converter (DAC) configured to generate a reference voltage based on the value. The first voltage is proportional to absolute temperature (PTAT) and the second voltage is complementary to absolute temperature (CTAT) and the reference voltage is substantially independent of absolute temperature in an operating temperature range of the reference voltage generator.