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Varenr. SEN0435

Fermion: MCP9808 High Accuracy I2C Temperature Sensor

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Documents

  • Product wiki
  • Schematics
  • Dimensions
  • MCP9808 Datasheets
  • Introduction

    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.

    Fermion: MCP9808 High Accuracy I2C Temperature Sensor

    Label Description
    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


    Fermion: MCP9808 High Accuracy I2C Temperature Sensor

    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
  • 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
  • Shipping List

  • Fermion: MCP9808 High Accuracy I2C Temperature Sensor x1
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