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Temperature Sensor IC, Thermocouple, Digital, ± 2°C, -200 °C, 1350 °C, NSOIC, 8 Pins

Date/Lot Code

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Manufacturer Part No:
Newark Part No.:
Technical Datasheet:
MAX31855KASA+T   Datasheet
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Product Overview

The MAX31855KASA+T is a cold junction compensated thermocouple to digital converter with built-in 14bit analogue to digital converter in 8 pin NSOIC package. The device contains cold junction compensation sensing and correction, digital controller, SPI compatible interface and associated control logic. It is designed to work in conjunction with an external microcontroller (μC) in thermostatic, process control or monitoring applications. The MAX31855K performs cold junction compensation and digitizes the signal from K type thermocouple with measuring temperature range of -200°C to +1350°C. The Thermocouple temperature gain and offset error ((41.276μV/°C nominal sensitivity)) is ±2°C at T (thermocouple) = -200°C to +700°C, TA = -20°C to +85°C) The data outputs in a signed 14bit, SPI compatible read only format.
  • Supply voltage range from 3V to 3.6V
  • Serial clock frequency of 5MHz
  • Integration reduces design time and lowers system cost
  • Detects thermocouple shorts to GND or VCC and open thermocouple
  • 14bit, 0.25°C resolution converter
  • Power supply current is 900μA
  • Thermocouple input bias current is 100nA
  • Temperature conversion time is 70ms and thermocouple conversion power-up time is 200ms


Sensing & Instrumentation, Industrial, HVAC, Automotive


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± 2°C







MSL 1 - Unlimited

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Technical Documents (3)

CAD Downloads


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CAD Models - Notice
CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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