Datasheet Analog Devices MAX31856

ManufacturerAnalog Devices

Precision Thermocouple to Digital Converter with Linearization


Datasheet MAX31856
PDF, 676 Kb, Language: en, File uploaded: Dec 20, 2022, Pages: 30
Precision Thermocouple to Digital Converter with Linearization
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Detailed Description

The MAX31856 performs cold-junction compensation and digitizes the signal from any type of thermocouple.

The output data is formatted in degrees Celsius. This converter resolves temperatures to 0.0078125°C, allows readings as high as +1800°C and as low as -210°C (depending on thermocouple type), and exhibits thermocouple voltage measurement accuracy of ±0.15%. The thermocouple inputs are protected against overvoltage conditions up to ±45V.

A lookup table (LUT) stores linearity correction data for several types of thermocouples (K, J, N, R, S, T, E, and B). Line frequency filtering of 50Hz and 60Hz is included, as is thermocouple fault detection. A SPI-compatible interface allows selection of thermocouple type and setup of the conversion and fault detection processes.

Model Line

Series: MAX31856 (2)

Manufacturer's Classification

  • A/D Converters (ADC) > Integrated/Special Purpose A/D Converters > Digital Temperature Sensors