MAX31855KASA+ K-Type Thermocouple to Digital Converter SOP-8

The MAX31855KASA+ is a sophisticated, cold-junction compensated thermocouple-to-digital converter specifically designed for K-type thermocouples. Housed in a compact SOP-8 package and marked with the M31855K silk screen, this IC simplifies complex temperature measurement by integrating a 14-bit ADC, cold-junction compensation, and fault detection logic into a single chip. It resolves temperatures to a fine 0.25°C and can measure a vast range from -270°C to +1372°C. The device outputs data in a signed 14-bit, SPI-compatible format, making it easy to interface with microcontrollers like Arduino, STM32, or ESP32. With built-in detection for open or shorted thermocouples, it is an essential component for high-reliability industrial automation, HVAC systems, and automotive temperature monitoring.

Features:

• Precision Digitization: Integrated 14-bit ADC providing 0.25°C resolution for accurate thermal data.
• Integrated Cold-Junction Compensation: Automatically adjusts for ambient board temperature for simplified design.
• Advanced Fault Monitoring: Detects open-circuits and shorts to VCC or GND for improved system safety.
• Broad Measurement Range: Supports K-type thermocouple readings from -270°C to +1372°C.
• Simple Serial Interface: Read-only SPI-compatible interface reduces pin count and wiring complexity.
• Industrial Durability: Rated for a wide operating temperature range of -40°C to +125°C.

Package Includes:

1 x MAX31855KASA+ K-Type Thermocouple to Digital Converter SOP-8