Micromechanical structures have been designed, fabricated in silicon and tested for use as on-chip voltage reference. Applications are in electrical metrology and in integrated silicon microsystems. Microbeams of 100 μm length, 3 μm width and 11μm thickness are electrostatically actuated with a very reproducible pull-in voltage at 9.1 V. Devices demonstrated an initial drift of -12 mV over 10 d...