The MAX31856 is a highly integrated thermocouple-to-digital converter that performs cold-junction compensation and digitizes the signal from any type of thermocouple. It includes a 19-bit analog-to-digital converter (ADC) and provides automatic linearization correction for eight thermocouple types (K, J, N, R, S, T, E, and B). The device offers a high-resolution output formatted in degrees Celsius with temperature resolution as fine as 0.0078125°C. It features a ±0.15% maximum full-scale measurement error and protects the thermocouple inputs from overvoltage conditions up to ±45V. Communication with the device is handled through a standard SPI-compatible interface.
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| Resolution | 19Bits |
| Temperature Resolution | 0.0078125°C |
| Voltage Measurement Accuracy | 0.15% |
| Supply Voltage (VDD) | 3.0 to 3.6V |
| Operating Temperature Range | -55 to +125°C |
| Supply Current | 1.2mA |
| Input Overvoltage Protection | ±45V |
| Interface Type | SPI-Compatible |
| Supported Thermocouple Types | K, J, N, R, S, T, E, B |
| RoHS | RoHS3 Compliant |
| REACH | REACH Unaffected |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
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