MAX31855KASA+
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Analog Devices Inc./Maxim Integrated MAX31855KASA+

Manufacturer No:
MAX31855KASA+
Manufacturer:
Analog Devices Inc./Maxim Integrated
Package:
Tube
Description:
IC CONV THERMOCOUPLE-DGTL SOIC
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The MAX31855KASA+ is a cold-junction compensated thermocouple-to-digital converter produced by Analog Devices Inc./Maxim Integrated. This device is designed to digitize the signal from various types of thermocouples, including K-, J-, N-, T-, S-, R-, and E-type. It integrates cold-junction compensation, reducing the need for external components and simplifying the design process. The MAX31855KASA+ offers high accuracy and resolution, making it suitable for a wide range of temperature measurement applications.

Key Specifications

ParameterSymbolConditionsMinTypMaxUnits
Thermocouple Temperature RangeTTHERMOCOUPLE-270°C to +1800°C-270-1800°C
Temperature Resolution----0.25°C
Cold-Junction Temperature Error-TA = -20°C to +85°C-2-2°C
Temperature Conversion TimetCONV-70100ms
Power-Up TimetCONV_PU---200ms
Input Leakage CurrentILEAK--1-1µA
Input CapacitanceCIN---8pF
Serial-Clock FrequencyfSCL---5MHz

Key Features

  • Integration of cold-junction compensation, reducing design time and system cost.
  • Supports K-, J-, N-, T-, S-, R-, and E-type thermocouples.
  • High temperature resolution of 0.25°C.
  • Temperature range from -270°C to +1800°C.
  • Accuracy of ±2°C for temperatures ranging from -200°C to +700°C for K-type thermocouples.
  • 14-bit, SPI-compatible, read-only output format.
  • Fault detection for open or shorted thermocouple inputs.

Applications

  • Industrial temperature measurement.
  • Appliance temperature control.
  • HVAC systems.
  • Automotive temperature sensing.
  • Medical devices requiring precise temperature monitoring.

Q & A

  1. What types of thermocouples does the MAX31855KASA+ support?
    The MAX31855KASA+ supports K-, J-, N-, T-, S-, R-, and E-type thermocouples.
  2. What is the temperature resolution of the MAX31855KASA+?
    The temperature resolution is 0.25°C.
  3. What is the operating temperature range of the MAX31855KASA+?
    The operating temperature range is from -270°C to +1800°C.
  4. How accurate is the MAX31855KASA+ for K-type thermocouples?
    The accuracy is ±2°C for temperatures ranging from -200°C to +700°C.
  5. What is the output format of the MAX31855KASA+?
    The output is in a 14-bit, SPI-compatible, read-only format.
  6. Does the MAX31855KASA+ have fault detection capabilities?
    Yes, it has fault detection for open or shorted thermocouple inputs.
  7. What is the typical conversion time for the MAX31855KASA+?
    The typical conversion time is 100 ms.
  8. What is the power-up time for the MAX31855KASA+?
    The power-up time is 200 ms.
  9. What is the input leakage current of the MAX31855KASA+?
    The input leakage current is ±1 µA.
  10. What is the maximum serial-clock frequency for the MAX31855KASA+?
    The maximum serial-clock frequency is 5 MHz.

Product Attributes

Type:Thermocouple to Digital Converter
Input Type:Thermocouple (Multiple)
Output Type:Digital
Current - Supply:900 µA
Operating Temperature:-40°C ~ 125°C
Mounting Type:Surface Mount
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOIC
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Similar Products

Part Number MAX31855KASA+ MAX31855RASA+ MAX31855SASA+ MAX31855KASA+T MAX31855TASA+ MAX31855NASA+ MAX31855EASA+ MAX31855JASA+
Manufacturer Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated
Product Status Active Active Active Active Active Active Active Active
Type Thermocouple to Digital Converter Thermocouple to Digital Converter Thermocouple to Digital Converter Thermocouple to Digital Converter Thermocouple to Digital Converter Thermocouple to Digital Converter Thermocouple to Digital Converter Thermocouple to Digital Converter
Input Type Thermocouple (Multiple) Thermocouple (Multiple) Thermocouple (Multiple) Thermocouple (Multiple) Thermocouple (Multiple) Thermocouple (Multiple) Thermocouple (Multiple) Thermocouple (J)
Output Type Digital Digital Digital Digital Digital Digital Digital Digital
Current - Supply 900 µA 900 µA 900 µA 900 µA 900 µA 900 µA 900 µA 900 µA
Operating Temperature -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC 8-SOIC 8-SOIC 8-SOIC 8-SOIC 8-SOIC 8-SOIC 8-SOIC

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