SWRU637 March   2025

 

  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 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Power Requirements
    2. 2.2 Temperature Range
    3. 2.3 Energy Trace
    4. 2.4 Hardware and Debug Setup
      1. 2.4.1 Using a LaunchPad XDS110 Debug Probe
      2. 2.4.2 Using a Generic XDS110 Debug Probe, Including a Separate LaunchPad
    5. 2.5 BoosterPack Connector Pinout
    6. 2.6 XDS110 Interface Connector
    7. 2.7 Debug Interface Connector
    8. 2.8 Jumper Information
    9. 2.9 Push Buttons
  9. 3Advanced use of the LaunchPad Hardware
    1. 3.1 External Antenna
    2. 3.2 XDS110 GPIOs
    3. 3.3 Reset Selection on BoosterPack Connector
    4. 3.4 I2C Pullup Resistors
  10. 4Software
    1. 4.1 Getting Started
    2. 4.2 Out of Box Demo
  11. 5Hardware Design Files
    1. 5.1 Reference Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  12. 6Compliance Information
    1. 6.1 CE Compliance
    2. 6.2 REACH Compliance
    3. 6.3 Waste Electrical and Electronic Equipment (WEEE) Compliance
  13. 7Additional Information
    1. 7.1 Trademarks
  14. 8References

3.1 External Antenna

The RF path of the LP-EM-CC2340R53 by default uses the Inverted F antenna printed on its PCB. The SMA connector near the PCB antenna can be used instead, which is useful for tests using an external antenna or for RF-conducted measurements.

To do that, the capacitor CA2 (as shown in Figure 3-1 has to reroute the RF path from the antenna to the SMA: desolder CA2 from its original vertical position (as shown in the picture below) and resolder it horizontally to connect to the pad near the SMA.

LP-EM-CC2340R53 Capacitor CA2 LocationFigure 3-1 Capacitor CA2 Location