MAX31856MUD+

The MAX31856MUD+ is a precision thermocouple to digital converter with linearization in 14 pin TSSOP package. 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.

• Supply voltage range is 3V to 3.6V
• Operating temperature range from -55°C to 125°C
• Includes automatic linearization correction for 8 thermocouple types
• 19bit, 0.0078125°C thermocouple temperature resolution
• ±0.7°C (max, -20°C to +85°C) cold-junction accuracy
• Detects open thermocouples, over and undertemperature fault detection

Applications

Sensing & Instrumentation, Industrial

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party