SWRA794A June   2024  – September 2024 AWRL1432 , AWRL6432 , IWRL1432 , IWRL6432 , IWRL6432AOP

 

  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
  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
    2. 7.2 Non-Safety Application With OLPC Tx Power Cal
    3. 7.3 Application With CLPC Tx Power Cal
  11. 8 Summary
  12. 9 References
  13. 10Revision History

5.4 Power Detector Calibration

The power detectors aim to provide an absolute voltage and power reference throughout the radar chip. Power detectors allow monitoring of voltage stress on the RF nodes, and quantify the output power at both the TX output and RF inputs. This allows for accurate RF BIST and impedance measurements (critical for safety monitors). To make these measurements accurate, the power detectors must be calibrated for variation in temperature. This calibration is carried out for all critical power detectors, especially the ones used for TX power calibration.

For functional safety compliant devices monitoring of analog and RF circuits, operation is essential. Safety monitors relies on power detectors, hence performing the Power Detector Calibration is important.