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AWR1642: 77GHz Radar IC selection Guide

Surya Thanush
Prodigy 30 points
Part Number: AWR1642
Other Parts Discussed in Thread: AWR1443, AWR1843, AWR1843AOP, AWR2944, AWRL1432, AWR2944P, AWR2544

Tool/software:

Hi ,

I am Surya from Intangles Lab Pvt. Ltd. from india
Our Company is developing ADAS Level 1 and level 2 Systems for Heavy Commercial Vehicles.

We were looking out for options to develop our Mid to Long Range 77GHz Radar system for AEBS (Advanced Emergency Braking System) and ACC (Adaptive Cruise Control).

we found the below TI Chipsets with Built-in processor

AWR1642 AWR1443 AWR1843 AWR1843AOP AWR2944 AWRL1432 AWR2944P AWR2544

We need some help in filtering them out to match the best IC for our use case

Our Functional Requirements
1. Short and Mid Range Point Cloud data
2. CAN-FD
3. SPI or any Openly available Communication Interface to connect to our Existing Hardware
4. On Device Processing
5. better Resolution
6. 90°-100° Field of View : Short / Mid Range
7. 30° Field of View : Long Range

From our Research we preferred AWR1642, AWR1843 & AWR2944

We need Suggestions and Recommendations from People who worked with these Chipsets to help us find the appropriate Chipset for our use case

Thank and Regards
Surya Thanush
Intangles Labs Pvt. Ltd.

  • 0
    TI__Mastermind 30545 points

    Hello,

    AWR1443, AWR1432, and AWR2544 have a built in HWA only, so I would rule these out of your application. All other devices you have listed include on-chip DSP for signal processing. 

    AWR2544 does not have CAN-FD so is not suitable for your application.

    AWR1432 is a lower power device intended for in cabin type applications, so this is also not suitable for your application.

    AWR1642 only has 2TX which limits its range and FoV.

    AWR1843AoP is a single patch antenna which limits its range.

    Based on this you are left with AWR1843, AWR2944 and AWR2944p. AWR1843 is similarly limited on range and FoV due to having 3TX. I would say your best bet is AWR2944p, which has the highest RF performance and on chip processing power for a front-end radar SoC application.  

    Regards,

    Adrian 

  • 0 in reply to aozer
    Prodigy 30 points

    Hi Adrian

    Thank you for the Valuable Recommendations.

    as a Conclusion you were recommending AWR2944P , AWR2944 and AWR1843 in descending Priority respectively right.

    we would like to know more about AWR2944P, since it is Preview only and not Production ready yet.
    and what would be the DFM (Design for Manufacturability) complexity for Launch-On-Package Antenna interface Compared to regular Patch Antenna (AWR2944P offers both the options)

    and how different is AWR2944 from AWR2944P except the LoP package Antenna, Slightly Slower Processor and Slower DSP ?
    is there any difference in RF Blocks, if yes how significantly they differ in Resolution, FOV and Range ?

    Thank you
    Surya Thanush

  • 0 in reply to Surya Thanush
    TI__Mastermind 30545 points

    Hello,

    Generally, LoP is simpler because you can just use one of the antenna designs from our third party and you do not have to worry about the PCB antenna. Or, you can directly work with a third party to design an antenna specific for your requirements. Also, you can directly connect a heatsink to the top of the MMIC package in your enclosure design, so thermal performance is better. Lastly, EMI/C performance is improved because you can easily shield the radar chip and other components on the MMIC side of the board since there is no antenna on that side of the PCB. 

    In terms of performance improvements, the "P" devices have the following improvements over non-P devices.

    1) SNR is improved by 2.5dB due to improved transistor process

    2) DSP, R5F, and HWA clocking speeds are increased to 450MHz, 400MHz, and 400MHz respectively

    3) SRAM size is increased from 4MB to 4.5MB

    4) 1Gbps RGMII is supported instead of only up 100Mbps

    Regards,

    Adrian