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  • Calibrations in TI Low-Power mmWave Radar Sensors

    • SWRA794B June   2024  – February 2025 AWRL1432 , AWRL6432 , AWRL6844 , IWRL1432 , IWRL6432 , IWRL6432AOP , IWRL6844

       

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  • Calibrations in TI Low-Power mmWave Radar Sensors
  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Acronyms Used in This Document
  5. 2 Introduction
  6. 3 Purpose of Calibrations
  7. 4 Typical Stages of Calibration
    1. 4.1 Factory Calibrations
    2. 4.2 APLL Calibration
    3. 4.3 Runtime Calibrations
  8. 5 List and Description of Calibrations
    1. 5.1 APLL Hardware Calibration
    2. 5.2 Synthesizer VCO Calibration
    3. 5.3 LO Distribution Calibration
    4. 5.4 Power Detector Calibration
    5. 5.5 TX Power Calibration
    6. 5.6 RX Gain Calibration
    7. 5.7 RX IFA Calibration
  9. 6 Software configurability of Calibrations
    1. 6.1 Software Sequence for Factory Calibrations
      1. 6.1.1 mmWaveLink Initialization
      2. 6.1.2 FECSS Power-On
      3. 6.1.3 APLL Power-On and Hardware Calibration
      4. 6.1.4 RF Channel Configuration
      5. 6.1.5 Trigger Factory Calibrations
      6. 6.1.6 Factory Calibration Data Store
      7. 6.1.7 APLL Power-Off
      8. 6.1.8 FECSS Power-Off
      9. 6.1.9 mmWaveLink De-Initialization
    2. 6.2 Software Sequence for Runtime (In-Field) Operation
      1. 6.2.1 Initialization
        1. 6.2.1.1 mmWaveLink Initialization
        2. 6.2.1.2 FECSS Power-On
        3. 6.2.1.3 APLL Power-On and Hardware Calibration
        4. 6.2.1.4 Factory Calibration Data Restore
        5. 6.2.1.5 Temperature Sensor Configuration
      2. 6.2.2 Profile Configuration
        1. 6.2.2.1 Profile Common Configuration
        2. 6.2.2.2 Profile Time Configuration
        3. 6.2.2.3 Frame Configuration
      3. 6.2.3 Runtime Calibration
        1. 6.2.3.1 Temperature Sensor Trigger
        2. 6.2.3.2 Runtime Calibration Configure and Trigger
        3. 6.2.3.3 Tx CLPC Calibration
      4. 6.2.4 Frame Trigger
        1. 6.2.4.1 Sensor Start
        2. 6.2.4.2 Sensor Status
        3. 6.2.4.3 Sensor Stop
      5. 6.2.5 Deep Sleep Entry and Exit
      6. 6.2.6 De-Initialization
  10. 7  Recommended Calibration Sequence: OLPC vs CLPC
    1. 7.1 Safety Application With OLPC Tx Power Cal - xWRLx432 and xWRL68xx
    2. 7.2 Non-Safety Application With OLPC Tx Power Cal - xWRLx432 and xWRL68xx
    3. 7.3 Application With CLPC Tx Power Cal - xWRLx432
    4. 7.4 Application With CLPC Tx Power Cal - xWRL68xx
  11. 8 Summary
  12. 9 References
  13. 10Revision History
  14. IMPORTANT NOTICE
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Application Note

Calibrations in TI Low-Power mmWave Radar Sensors

Abstract

TI's Low Power mmWave Radar Sensors have been built internally into subsystems like FECSS and APPSS which, by design, support various calibrations methods and topologies. Calibration routines makes sure that the performance of the radar front end is maintained across operational temperature range and process variations across devices. This application note describes the various types of calibrations supported in low power mmWave radar sensors and also details about the software configurability of these calibrations.

 
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