ZHCACG7A 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
另一种偏置热电偶的拓扑需要启用 ADC 多路复用器中的 VBIAS 发生器。VBIAS 连接到热电偶的负极引线,将热电偶设置为 1/2 Vs 电压。在热电偶的正极引线与 AVDD 之间连接一个上拉电阻。这样会在烧毁条件下将正输入拉离 VBIAS,从而产生正的满量程 ADC 读数。