Patent ID: 8573840
Filing Date: 2013-11-05
Classification: G01K

Abstract:
1. Integrated temperature sensor comprising: means for generating a pulse train DATA_IN at a certain oscillation frequency; means for counting the number of pulses of said pulse train DATA_IN during a fixed time independent of a temperature to be measured T and for generating a plurality of bits b means for generating a serial digital signal DATA_OUT DATA_OUT@T from said plurality of bits b wherein the means for generating a pulse train DATA_IN comprise a plurality of logic gates configured for introducing a delay dependent on the temperature to be measured T wherein the means for generating a pulse train DATA_IN generates a pulse train DATA_IN the oscillation frequency of which is dependent on the temperature to be measured T, wherein the sensor further comprises control means for coordinating the means for generating a pulse train, the means for counting the number of pulses of the pulse train and for generating a plurality of bits and the means for generating a serial digital signal from at least one reference signal CLK independent of temperature to be measured T, said reference signal CLK being an input for said means for generating a serial digital signal, and said control means having as output a signal ENABLE, said signal ENABLE being an input for said means for generating a pulse train and for said means for counting the number of pulses of the pulse train and for generating a plurality of bits.