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

2.1.2 Connecting Board Power and Ground

Important:

A flathead screwdriver with at least a 2.5mm head is required to loosen and tighten all terminal block screws.

To power the HDC3120EVM, connect a DC voltage source (1.62V - 5.5V) to the 2-position terminal block at the center-top of the board. First, loosen the terminal screws with a flathead screwdriver and fully insert the exposed copper tip of each jumper cable to provide stable connection. Next, tighten the terminal block screws just enough to prevent wires from unintentional removal during operation. Figure 2-2 illustrates VDD and GND connection using jumper cables.

CAUTION: Exceeding the 1.62V - 5.5V voltage range can damage the EVM.
HDC3120EVM Input VDD and GND InsertFigure 2-2 Input VDD and GND Insert