A temperature compensated low voltage reference circuit can be realized
with a reduced operating voltage overhead. This is accomplished in
several ways including minimizing drain voltage variation at the drains
of two inter-connected transistors and implementing a current conveyer in
order to adjust the temperature coefficient of an output current or
voltage. Various combinations of voltage minimization and temperature
coefficient adjustments may be used to design a reference circuit to a
circuit designer's preference. A temperature compensated current source
may also be created. The temperature compensated current source may be
used to provide a wide range of output voltages. All of the reference
circuits may be constructed with various types of transistors including
DTMOS transistors.