SWRA689 February 2022 AWR6843 , AWR6843AOP , IWR6843 , IWR6843AOP
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TI mmWave Sensors enable high performance measurement and object detection over a variety of applications but some designs require minimal power consumption. This Application Note will showcase various power-saving techniques on the mmWave sensor where power consumption concerns are critical. Using this guide will enable one to implement various optimizations for evaluation. Moreover this guide discusses the tradeoffs involved as well.
The power saving techniques discussed in this guide can be implemented exclusively through software. Using the AWR6843 Evaluation Module (EVM), mmWave-SDK, and Code Composer Studio IDE one can replicate the results shown here with the use of standard laboratory equipment for power measurement.
The highly integrated nature of the AWR/IWR6843 Sensor allows for varying schemes of power optimization. For example an application that makes use of only 1Tx/1Rx will see less power consumed during active chirp time than a multi-Tx/Rx application where more angular resolution is required. As such one should be aware of the various performance compromises that result from optimizing for power. However the benefit of integration allows the optimizations to be implemented through software that can even be configured at runtime.