Grove - 1-Wire Thermocouple Amplifier (MAX31850K)

Grove - 1-Wire Thermocouple Amplifier (MAX31850K)

SKU 101020555
50+ Available
$13.95/ 1pcs+
$12.56/ 10pcs+
$11.86/ 20pcs+
$11.16/ 50pcs+


The Grove - 1-Wire Thermocouple Amplifier (MAX31850K) is a thermocouple-to-digital converters with 14-bit resolution and cold-junction compensation. This module is designed to be used in conjunction with a k-type thermocouple. The thermocouples have a much larger measurement range than thermistors. For example, this k-type thermocouple on our website has a measurement range of -50℃ to +600℃.

This module is based on the MAX31850K, which integrates amplifier, ADC and 64-bit ROM. Thanks to the 64-bit ROM, each device has a unique 64-bit serial code, which allows multiple units to function on the same 1-Wire bus. Therefore, it is simple to use one microcontroller (the master device) to monitor temperature from many thermocouples distributed over a large area.

Again, this module can't work alone, it must work with a k-type thermocouple, if you do not have one, you can consider Thermocouple Temperature Sensor K Type-1M in our bazaar.


- Integrated Cold-Junction Compensation

- Wide Conversion Range: allow readings from -270℃ to +1768℃

- 14-Bit, 0.25℃ Resolution

- Will not work with any other kind of thermocouple except K type

- Detects Thermocouple Shorts to GND or VDD

- Detects Open Thermocouple

Typical Applications

- Medical

- Appliances

- Industrial

- HVAC(Heating, Ventilation and Air Conditioning)

Pin Out

Assembly drawing


        Usually the positive pole of the K-type thermocouple is red and the negative is light white, but we can't guarantee that all K-type thermocouples are like this. So the above diagram is only for the K-type thermocouple purchased from our website. If your K-type thermocouple is obtained from other places, you need to use other methods to judge the positive and negative.


Technical Details

Dimensions40mm x 20mm x 18mm
WeightG.W 11.10g     N.W 4.90g
Operating Voltage 3.3V / 5V
Temperature Resolution 14 bits
Temperature Accuracy ± 2℃
Operating Temperature Range -40℃ to +125℃
Storage Temperature Range -65℃ to +150℃
Allow Readings Range -270℃ to +1768℃
Input Jack DIP Female Blue-2Pin
Output Interface 1-Wire bus

Part List

Grove - 1-Wire Themocouple Amplifier (MAX31850K)1
Grove Cable1




Questions and Answers

Does this have 5v level shifting built into the circuit? It is not clear from the text. I think I can see the level shifting component on the board but I'm not sure. Thank you.
on Dec 02,2018
Reply upvote ()
Hi there, it is build in. please refer to **** thanks.
on Dec 03,2018 12:01 PM
Reply upvote ()

    View History

    Grove - 1-Wire Thermocouple Amplifier (MAX31850K)

    SKU 101020555
    50+ Available
    $13.95/ 1pcs+
    $12.56/ 10pcs+
    $11.86/ 20pcs+
    $11.16/ 50pcs+
    • Related
    • Description
    • Technical Details
    • Learn
    • Reviews
    • Questions and Answers
    Notify me when it's back in stock