Patent ID: 7661878
Filing Date: 2010-02-16
Classification: G01K

Abstract:
1. An integrated circuit comprising: a voltage/current source circuit adapted to provide a reference voltage and a current; a sense signal circuit adapted to receive the current of the voltage/current source circuit and to provide a sense signal corresponding to the temperature of the integrated circuit; a reference signal circuit adapted to receive the reference voltage of the voltage/current source circuit and to provide a reference signal having a selectable value, the reference signal circuit including a resistance ladder adapted to receive the reference voltage and to provide a plurality of selectable reference values based on the reference voltage and a multiplexer adapted to receive the selectable reference values and to provide the reference signal with a selected value based on a multiplexer control signal; and a comparator adapted to compare the sense signal of the sense signal circuit to the reference signal with a selected value and to provide a temperature sensor output signal.