A temperature sensor semiconductor device, comprising: a first diode (bip 1 ) and a second diode (bip 2 ) of specified sizing or biasing ratio, a first resistor (R 1 , R 1a ) , which is provided for a PTAT voltage (V ptat ) drop, the first diode (bip 1 ) being connected between a negative supply voltage and the first resistor (R 1 , R 1a ), and an array of dynamically matched current sources employing a dynamic element matching controller (DEM), the first resistor (R 1 , R 1a ) being connected between the first diode (bip 1 ) and a first input of the array of dynamically matched current sources, the second diode (bip 2 ) being connected between the negative supply voltage and a second input of the array of dynamically matched current sources, wherein a SAR feedback loop is provided for driving a voltage difference to zero, said voltage difference occurring between a first node that is present between the first resistor (R 1 , R 1a ) and the first input of the array of dynamically matched current sources and a second node that is present between the second diode (bip 2 ) and the second input of the array of dynamically matched current sources, the SAR feedback loop comprises a SAR controller, a SAR comparator, a generator for a CTAT voltage (V ctat ), and an adjustable second resistor (R 2 ), which implements a SAR digital-to-analog converter and is configured to convert the CTAT voltage (V ctat ) into a proportional current, and the generator for the CTAT voltage (V ctat ) is connected to the array of dynamically matched current sources to define a nominal current, thus closing the SAR feedback loop. a first diode (bip 1 ) and a second diode (bip 2 ) of specified sizing or biasing ratio, a first resistor (R 1 , R 1a ) , which is provided for a PTAT voltage (V ptat ) drop, the first diode (bip 1 ) being connected between a negative supply voltage and the first resistor (R 1 , R 1a ), and an array of dynamically matched current sources employing a dynamic element matching controller (DEM), the first resistor (R 1 , R 1a ) being connected between the first diode (bip 1 ) and a first input of the array of dynamically matched current sources, the second diode (bip 2 ) being connected between the negative supply voltage and a second input of the array of dynamically matched current sources, wherein a SAR feedback loop is provided for driving a voltage difference to zero, said voltage difference occurring between a first node that is present between the first resistor (R 1 , R 1a ) and the first input of the array of dynamically matched current sources and a second node that is present between the second diode (bip 2 ) and the second input of the array of dynamically matched current sources, the SAR feedback loop comprises a SAR controller, a SAR comparator, a generator for a CTAT voltage (V ctat ), and an adjustable second resistor (R 2 ), which implements a SAR digital-to-analog converter and is configured to convert the CTAT voltage (V ctat ) into a proportional current, and the generator for the CTAT voltage (V ctat ) is connected to the array of dynamically matched current sources to define a nominal current, thus closing the SAR feedback loop. <EOS>