Datasheet Analog Devices MAX31856 — 数据表

EVALUATION KIT AVAILABLE MAX31856 Precision Thermocouple to Digital Converter
with Linearization General 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. Applications ●● Temperature Controllers
●● Industrial Ovens, Furnaces, and Environmental Chambers
●● Industrial Equipment
Ordering Information appears at end of data sheet. Benefits and Features ●● Provides High-Accuracy Thermocouple Temperature
Readings
• Includes Automatic Linearization Correction for 8
Thermocouple Types
• ±0.15% (max, -20°C to +85°C) Thermocouple FullScale and Linearity Error
• 19-Bit, 0.0078125°C Thermocouple Temperature
Resolution …