TIDUDW4B January   2019  – December 2024 CC2640R2F , TMP117

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 TMP119
      2. 2.3.2 CC2340R5
    4. 2.4 System Design Theory
      1. 2.4.1 Shelf Life and Active Life
      2. 2.4.2 Wearer Comfort
      3. 2.4.3 System Accuracy
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware and Software
      1. 3.1.1 Hardware
      2. 3.1.2 Software
        1. 3.1.2.1 Reading From the Patch
    2. 3.2 Testing and Results
      1. 3.2.1 Test Setup
        1. 3.2.1.1 Current Consumption and Life Span
      2. 3.2.2 Test Results
        1. 3.2.2.1 Current Consumption and Lifespan
  10. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
    3. 4.3 PCB Layout Recommendations
      1. 4.3.1 Layout Considerations for the CC2340R5
      2. 4.3.2 Layout Considerations for the TMP119
        1. 4.3.2.1 WCSP (YBG) Package
      3. 4.3.3 Layout Prints
    4. 4.4 Altium Project
    5. 4.5 Gerber Files
    6. 4.6 Assembly Drawings
    7. 4.7 Related Documentation
    8. 4.8 Trademarks
    9. 4.9 Revision History

3.2.1.1 Current Consumption and Life Span

The current consumption of the device was tested by connecting the power pads on the wireless patch to a DC power analyzer capable of measuring currents in the nA range at fast intervals over time. For the current consumption test during initialization, the current consumption was measured as soon as the pads on the wireless patch were connected to the power analyzer. The measurement spanned the full start-up sequence, and the average current was taken. The power analyzer then remained connected and measuring while the device cycled between advertizing and connected active modes. The average and peak current consumption during active mode were taken since both are relevant for battery selection considerations.