A low power reference device is disclosed. The low power reference device includes a precision reference module, a low power reference module, a calibration module, an output module and one or more sequencers. The precision reference module is configured to output a first reference signal while the low power reference module is configured to output a second reference signal. The calibration module is configured to receive the first and second reference signals and output a correction signal to the low power reference module. The output module is configured to receive the first and second reference signals and output a final reference signal. The one or more sequencers are configured to drive each of the precision reference modules, low power reference module, calibration module and output module according to a predetermined timing sequence.