SBAU378A September 2021 – January 2022 ADS1148 , ADS1248
Table 3-5 summarizes the required IDAC, jumper, and analog input channel settings to measure each RTD configuration using the ADS1x48EVM.
RTD | No. of IDACs | RREF | IDAC Channels | JP3 | JP4 | JP5 | JP6 | AINP | AINN |
---|---|---|---|---|---|---|---|---|---|
2-wire | 1 | Low-side | IEXC1 | On | On | Off | Off | AIN3 | AIN1 |
1 | High-side | AIN1 | Off | On | On | On | AIN0 | AIN3 | |
3-wire | 1 | Low-side | IEXC1 | On | On | Off | Off | AIN3(1) | AIN2(1) |
AIN2(2) | AIN1(2) | ||||||||
1 | High-side | AIN1 | Off | On | On | On | AIN0(1) | AIN2(1) | |
AIN2(2) | AIN3(2) | ||||||||
2 | Low-side | IEXC1, IEXC2 | On | On | Off | Off | AIN3 | AIN2 | |
2 | High-side | AIN1, IEXC2 | Off | On | On | On | AIN0 | AIN2 | |
4-wire | 1 | Low-side | IEXC1 | On | Off | Off | Off | AIN3 | AIN2 |
1 | High-side | AIN1 | Off | Off | On | On | AIN2 | AIN3 |