"Equation 9-1 provides an approximate transfer function of the on-chip temperature sensor for VDD = 5.0V, Temp = 25°C, using the ADC1 at fADCK = 1.0MHz and configured for long sample.
- The constant 0.0017 (1.7mV/C) is supposed to be the temperature sensors slope with VDD = 5V.
- The constant 0.7013V is supposed to be the voltage of the temp sensor at 25C with VDD = 5V.
Contrary to these 2 points is the data at the bottom of "Table A-12. ADC Characteristics".a
- The temp sensor slopes are 3.266 and 3.638mV/C for -40 to 25C and 25 to 125C respectively with VDD = 5V.
- The temp sensor voltage is supposed to be 1.396V at 25C with VDD = 5V.
Both of these data pairs cannot be correct. As it turns out, the numbers used in Equation 9-1 of the SH8/SG8 datasheet are incorrect for VDD = 5V, but would be correct for 3V. The data in Table A-12 is correct (with the exception that the 25C/5V temp senor voltage is shown as 1.396mV instead of 1.396V).
My local FAE has confirmed that the numbers in Table A-12 are correct, and the numbers in Equation 9-1 are incorrect for VDD = 5V; however my FAE also thought that the SH8 was a 3V part when it is actually a 5V part.
So to double check, can anyone confirm that for an S08 part (preferably an SH8 or SG8) that with VDD = 5V, that the 25C temp-sensor voltage is ~1.396V and that the slope(s) are near 3.4mV/C?