SBOU319A November   2024  – June 2025 HDC3120

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 HDC3120EVM Specifications
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Setup and Interface
      1. 2.1.1 Setup Overview
      2. 2.1.2 Connecting Board Power and Ground
      3. 2.1.3 Connecting to the HDC3120 and Comparator Outputs
      4. 2.1.4 Temperature
      5. 2.1.5 Relative Humidity (RH)
      6. 2.1.6 HDC3120EVM Buttons
        1. 2.1.6.1 Reset Button (SW1)
        2. 2.1.6.2 Heater Enable Switch (S2)
    2. 2.2 Comparator Function
  9. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
      1. 3.2.1 Layout Overview
      2. 3.2.2 Layout Guidelines
    3. 3.3 Bill of Materials (BOM)
  10. 4Additional Information
    1. 4.1 Trademarks
  11. 5Related Documentation
  12. 6Revision History

1.4 Device Information

The HDC3120 is an integrated, capacitive based relative humidity (RH) and temperature sensor where the relative humidity and temperature sensor results are represented as ratiometric analog outputs. The HDC3120's analog signal output enables robust, long-distance signal transmission and simplifies integration in systems without digital support. For more information of the IC, please refer to the device data sheet. Table 1-3 includes some of the parameters of interest of the HDC3120 such as the operating ranges for the ambient environment and power supply. Table 1-4 includes similar parameters of the included TLV9030 comparators to consider when using this EVM.

Table 1-3 HDC3120 Device Specifications

Device Specifications

Values

Operating temperature range

(temperature)

-40°C - 125°C

Operating temperature range (RH)

-20°C - 80°C

Operating supply range

1.62V - 5.5V

Table 1-4 TLV9030 Device Specifications

Device Specifications

Values

Operating temperature range

-40°C - 125°C

Operating supply range

1.65V - 5.5V