Products > Integrated Circuits (ICs) > Interface ICs > MAX31855KASA+

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

  • Package/Case :
  • SOP-8
  • Product Categories :
  • Data Conversion ICs - Various
  • RoHs Status:
  • Lead free/RoHS Compliant
  • In-stock:
  • 12656


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MAX31855KASA+ Product Details

The MAX31855KASA+ 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


  • Computers: Desktop, Workstation, Server
  • Equipment Meeting IEC 1000-4-2
  • Instruments
  • Motherboards

MAX31855KASA+ Block Diagram
(Picture: Diagram)

Technical Parameters

  • Resolution
  • 14 bit
  • Operating Supply Voltage
  • 3.3 V
  • Power Consumption
  • 470.6 mW
  • Operating Temperature Range
  • - 40 C to + 125 C
  • Package / Case
  • SO-8
  • Packaging
  • Tube
  • Mounting Style
  • Series
  • MAX31855
  • Part # Aliases
  • 90-31855+K00

MAX31855KASA+ Documents

MAX31855KASA+ Related Products

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Estimated Delivery Time: May 11 - May 16 days (choose Expedited at checkout).

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  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


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  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that MAX31855KASA+ is the original manufacturer or agent of MAXIM?
We have a professional business development department to strictly test and verify the qualifications of MAXIM original manufacturers and agents. All MAXIM suppliers must pass the qualification review before they can publish their MAX31855KASA+ devices; we pay more attention to the channels and quality of MAX31855KASA+ products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of MAX31855KASA+ chips? Including MAXIM original factory information, Data Conversion ICs - Various application, MAX31855KASA+ pictures?
You can use Jotrin's intelligent search engine, or filter by RS-232 Line Driver/Receivers category, or find it through Maxim Integrated Information page.
Q: Are the MAXIM's MAX31855KASA+ price and stock displayed on the platform accurate?
The MAXIM's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for MAX31855KASA+, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
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Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of MAX31855KASA+?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the MAX31855KASA+ we delivered, we will accept the replacement or return of the MAX31855KASA+ only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of MAX31855KASA+.
(3)The MAX31855KASA+ is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as MAX31855KASA+ datasheet pdf, MAX3185 pin diagram?
Need any After-Sales service, please feel free contact us:

Maxim Integrated

Maxim Integrated Products is a global range of linearity, mixed-signal integrated circuits (IC) design, R & D and manufacturing leader, has designed, developed, and manufactured analog, mixed-signal, high-frequency, and digital circuits that enable all four of these key interactions....
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