circuit of fig2 may serve as an embodiment of temperature circuit 350 of fig3 with delta sigma adc 308 being an equivalent of adc 224 referring again to fig2 adc 224 may be a delta sigma adc that performs required signal conditioning functions on u03b4v be where setting v ref may result in a setting of the gain of adc 224 as well as the offset voltage v offset of adc 224 the required adc temperature gain in this embodiment may be expressed as temp u2062 u2062 gain v ref u03b4 u2062 u2062 v be u2061 max u03b4 u2062 u2062 v be u2061 min 5 as an example the ratio u2018 n u2019 between the current provided by current source i 1 210 and the current provided by current source i 2 212 may be selected to be 17 with a desire to obtain temperature measurements within a range of u2212 64 u00b0 c to 191 u00b0 c in this case equation 2 becomes u03b4 u2062 u2062 v be u03b7 kt q ln u2061 17 6 u03b4 u2062 u2062 v be u2061 max u03b7 k 273 15 191 q ln u2061 17 7 where 273 15 is the conversion value required to convert from u00b0 c to u00b0 k equation 7 then leads to.