Self-Calibration in TI’s mmWave Radar Devices

TI’s mmWave radar sensors include an internal processor and hardware architecture to enable self-calibration and monitoring. Calibration ensures that the performance of the radar front end is maintained across temperature and process variation. Monitoring enables the periodic measurement of RF/analog performance parameters and the detection of potential failures. This application note briefly describes the calibration and monitoring mechanisms and focuses mainly on the software configurability of the calibration routines run by the internal processor. Abbreviations Abbreviation Description APLL Analog Phase Locked Loop BIST Built-in Self Test CLPC Closed Loop Power Control DFE Digital Front End HPF High Pass Filter IF Intermediate Frequency IFA Intermediate Frequency Amplifier LNA Low Noise Amplifier LO Local Osscilator LPF Low Pass Filter LUT Lookup Table OLPC Open Loop Power Control PA Power Amplifier VCO Voltage Controlled Oscillator www.ti.com SPRACF4B – JUNE 2018 – REVISED NOVEMBER 2021 Submit Document Feedback Self-Calibration in TI’s mmWave Radar Devices 1 Copyright © 2021 Texas Instruments Incorporated Table of