SBAA274A September 2018 – March 2023 ADS1118 , ADS1119 , ADS1120 , ADS112C04 , ADS112U04 , ADS1146 , ADS1147 , ADS1148 , ADS114S06 , ADS114S06B , ADS114S08 , ADS114S08B , ADS1219 , ADS1220 , ADS122C04 , ADS122U04 , ADS1246 , ADS1247 , ADS1248 , ADS124S06 , ADS124S08 , ADS125H02 , ADS1260 , ADS1261 , ADS1262 , ADS1263
Using the ADC internal voltage reference or external voltage reference, the output code is converted to the measured thermocouple voltage. An output code of 7FFFh may indicate a open sensor.
Measure the cold-junction temperature and convert the temperature to the equivalent cold-junction thermoelectric voltage. Add the thermocouple voltage to the equivalent cold-junction voltage.
Convert the resulting voltage (V) to temperature determine the exact thermocouple temperature.