An integrated circuit that includes at least one tunneling device voltage
reference circuit for use in low voltage applications is disclosed. The
tunneling device voltage reference circuit includes a pair of voltage
dividing device stacks, one having a linear voltage output and the other
having a non-linear voltage output. A feedback circuit supplies a
regulated voltage to each of the voltage dividing stacks so that the
output voltages of the two device stacks equalize. Once the feedback
circuit has locked, any one of the device stack output voltages and the
regulated voltage may be used as a voltage reference.