MAX31856
Description
The MAX31856 performs cold-junction pensation 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-patible interface allows selection of thermocouple type and setup of the conversion and fault detection processes.
Applications
- - Temperature Controllers
- - Industrial Ovens, Furnaces, and Environmental
Chambers
- - Industrial Equipment
Ordering Information appears at end of data sheet.
Typical Application Circuit
Benefits and...
