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Adafruit ADA1782 MCP9808 High Accuracy I2C Temperature Sensor Breakout Board

Standard range
Order Code:

73-0179

Brand: Adafruit MPN: ADA1782
Qty Unit Price (Ex VAT)
1+ £5.40
Price per unit {{ IncVat ? 'Inc' : 'Ex' }} VAT
1 in stock, despatched same dayAdditional 10 due on 28/04/2025

This Adafruit MCP9808 Precision I2C digital temperature sensor is very accurate and precise. With a typical accuracy of ±0.25°C over the sensor's -40°C to +125°C range and precision of +0.0625°C. The Adafruit MCP9808 Precision I2C digital temperature sensor works great with any microcontroller using standard i2c.

There are 3 address pins so you can connect up to 8 to a single I2C bus without address collisions. Best of all, a wide voltage range makes is usable with 2.7V to 5.5V logic.

Unlike the DS18B20, this sensor does not come in through-hole package; so this small sensor is placed on a breakout board PCB for easy use. The PCB includes, mounting holes and pull down resistors for the 3 address pins. There is a library for Arduino that will work with any Arduino compatible. It will be up and running in 15 minutes or less.


  • Simple I2C control
  • Up to 8 on a single I2C bus with adjustable address pins
  • 0.25°C typical precision over -40°C to 125°C range (0.5°C guaranteed max from
    -20°C to 100°C)
  • 0.0625°C resolution
  • 2.7V to 5.5V power and logic voltage range
  • Operating Current: 200 μA (typical)

*Customers looking to resell on eBay or Amazon should contact Adafruit directly.


Type Breakout board
Compatible Arduino
Dimensions 21 x 13 x 2mm
Voltage range 2.7 to 5.5V
Weight 0.9g

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