Circuits and methods for a low voltage pre-distortion circuits that provide
a temperature and logarithmically compensated voltage such that a gain change of
a variable gain amplifier is linear in dB and has a reduced temperature dependency.
A temperature compensation circuit multiplies the transfer function of gain of
the amplifier versus gain control voltage by absolute temperature. A logarithmic
compensation circuit removes the non-logarithmic factor of a "1" in the denominator
of the transfer function.