Silicon bandgap temperature sensor

The silicon bandgap temperature sensor is an extremely common form of temperature sensor (silicon diode is temperature-dependent, according to the following equation:

$V_{BE}=V_{G0}(1-{T/T_0})+V_{BE0}(T/T_0)+(nKT/q)\ln(T_0/T)+(KT/q)\ln(IC/IC_0) \,$