MAX31855TASA+

The MAX31855TASA+ is a cold junction compensated thermocouple to digital converter in 8 pin NSOIC package. This is a "T" type sophisticated thermocouple to digital converter with a built-in 14bit analogue to digital converter (ADC) also contains cold junction compensation sensing and correction, a digital controller, an SPI compatible interface (read only) and associated control logic. The function of the thermocouple is to sense a difference in temperature between two ends of the thermocouple wires and it has a signal-conditioning hardware to convert the thermocouple’s signal into a voltage compatible with the input channels of the ADC. The device is designed to work in conjunction with an external microcontroller (µC) in thermostatic, process-control or monitoring applications.

• Supply voltage range is 3V to 3.6V
• Operating temperature range from -40°C to +125°C
• Measured temperature range of -250°C to +400°C
• Integration reduces design time and lowers system cost
• Detects thermocouple shorts to GND or VCC
• Detects open thermocouple
• Thermocouple temperature data resolution is 0.25°C
• Temperature gain & offset error (52.18µV/°C nominal sensitivity) is ±2°C at TA = -20°C to +85°C

Applications

Sensing & Instrumentation, Industrial, Automotive

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