TIDUF19 September 2022 ADS1282-SP
Table 2-1 details the system specifications of TIDA-060042, the RTD board, which is designed to connect to ADS1282EVM-PDK for temperature measurement.
Net name | Description | Value | Unit | Error [%] | |
---|---|---|---|---|---|
Power Supply | 5V_in | RTD board power supply | 5 | V | N/A |
Input | Rref | Sets the Vref for ADS1282EVM | 4.76 for IRTD(1) ≈ 0.5 mA | kOhm | 0.05% |
2.18 for IRTD ≈ 1 mA | |||||
1.1 for IRTD ≈ 1.5 mA | |||||
Rset | Sets the current at all RTDs and Rref | 1.5k for IRTD ≈ 0.5 mA | Ohm | 0.05% | |
750 for IRTD ≈ 1 mA | |||||
500 for IRTD ≈ 1.5 mA | |||||
RTD1 to RTD10 | 10 RTDs located at different locations | 0 to 135 | Ohm | 0.05% | |
Output | ADCin1 | Voltage across RTD1 | 0 to Vref(1)/(2*gain(1)) | V | 0.1% |
ADCin2 | Voltage across RTD2 | 0 to Vref/(2*gain) | V | 0.1% |
Current of all RTDs, Rset, and Rref as shown in Figure 2-1
Vref is the voltage across Rref in Figure 2-1
ADS1282-SP programable gain amplifier (PGA) gain, which could be set to 1, 2, 4, 8, 16, 32, and 64