SBOU246 January 2022 TMP61 , TMP61-Q1 , TMP63 , TMP63-Q1 , TMP64 , TMP64-Q1
While the voltage divider circuit with the TMP61 thermistor is simple to convert to, it does not take advantage of the full-scale range of the ADC input. There are two recommended design approaches to increase the full scale range of the thermistor divider circuit. One approach is to use a current source and the other is to design your circuit with the addition of an operation amplifier. The following sections will help to design these circuits.