DFRobot

Fermion: MCP9808 High Accuracy I2C Temperature Sensor

Name: Fermion: MCP9808 High Accuracy I2C Temperature Sensor
Brand: DFRobot
SKU: DF-SEN0435
Price: 9.3 AUD
Availability: InStock

All Products Breakouts New Arrivals Sensors Temperature Sensors Arduino Environmental (temperature, humidity, air quality) DFRobot Sensors & Modules Prototyping & Wiring

$9.30 |

In stock at supplier

No reviews yet

Compared to DS18B20, LM35, and other common temperature sensors, the MCP9808 is one of the more accurate temperature sensing options, with a typical accuracy...

Add to Wishlist

Compare

Estimated Delivery

Arrives

Disclaimer

View Markdown

Secure checkout

Compared to DS18B20, LM35, and other common temperature sensors, the MCP9808 is one of the more accurate temperature sensing options, with a typical accuracy of ±0.25°C and maximum accuracy of ±0.5°C over the sensor's -40°C to +125°C range and precision of +0.0625°C.

The MCP9808 comes with user-programmable registers that allow user-selectable settings such as Shutdown or Low-Power modes and the specification of temperature Alert window limits and critical output limits. When the temperature changes beyond the specified boundary limits, the MCP9808 outputs an Alert signal. The user has the option of setting the Alert output signal polarity as an active-low or active-high comparator output for thermostat operation, or as a temperature Alert interrupt output for microprocessor-based systems.

These features make the MCP9808 ideal for sophisticated, multi-zone, temperature-monitoring applications.

LabelDescription
| VCC | Power Positive
| GND | Power Negative
| SCL | Clock line
| SDA | Data line
| ALT | Alert
| A0 | I2C Address Configuration Pin
| A1 | I2C Address Configuration Pin
| A2 | I2C Address Configuration Pin

Connection Diagram

Features

High-temperature detection accuracy ±0.25°C/±0.5°C (typical/maximum)

Wide temperature detection range from -40°C to +125°C

Applications

Industrial Freezers and Refrigerators

Food Processing

Personal Computers and Servers

PC Peripherals

Consumer Electronics

Specification

Operating Voltage: 2.7~5.5V

Operating Current: 200μA (typical)

Accuracy:
±0.25°C (typical) from -40°C to +125°C
±0.5°C (maximum) from -20°C to 100°C
±1°C (maximum) from -40°C to +125°C

User-Selectable Measurement Resolution: +0.5°C, +0.25°C, +0.125°C, +0.0625°C

User-Programmable Temperature Alert: Temperature Threshold Alert, Critical Temperature Alert

Communication Interface: I2C (2.54mm Breakout)

Dimension: 18.5×23mm/0.73×0.91"

Mounting Hole Size: 2mm

Mounting Hole Pitch: 18mm

Documents

Shipping List

Fermion: MCP9808 High Accuracy I2C Temperature Sensor x1

Jargon buster

Plain-language definitions for the technical terms used above.

breakout: A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
DS18B20: The DS18B20 is a common digital temperature sensor, often supplied in a waterproof stainless-steel probe, that sends its readings to a microcontroller over a 1-Wire connection. It is a typical choice for adding temperature data to environmental or water-monitoring projects.
GND: GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
I2C: I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
I2C address: An I2C address is the number a device uses so a microcontroller can tell it apart from other devices on the same I2C bus. It matters because two devices with the same fixed address may conflict if used together.
VCC: VCC is the positive power-supply connection on a chip or module. Connecting it to the correct supply voltage is needed for the part to power on and helps avoid damaging the electronics.