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Associate II
October 27, 2024
Solved

Difference Between CX and CH models - St's ToF

  • October 27, 2024
  • 1 reply
  • 1365 views

I'm looking to integrate a ToF into our product for gesture recognition. I have my eyes on the
VL53L8CH, VL53L8CX and the previous VL53L7CH, VL53L7CX. I understand the difference between the different generations. But I've been all over the datasheet, and yet I can't find the difference between the so call "AI enabling" CH ones, and the "High Performance" CX ones. Is there an actual difference, or is it just a marketing gimmick.

Thanks!


https://www.st.com/en/imaging-and-photonics-solutions/vl53l8cx.html 8cx

https://www.st.com/en/imaging-and-photonics-solutions/vl53l8ch.html 8ch

https://www.st.com/en/imaging-and-photonics-solutions/vl53l7cx.html 7cx

https://www.st.com/en/imaging-and-photonics-solutions/vl53l7ch.html 7ch

Best answer by John E KVAM

The CH chips are specially chosen because they are guaranteed to run the more demanding software and still meet the framerate specifications.

The CX versions will run the CH software but are not guaranteed to do so.

If you build lots of devices, you might have unacceptable fallout rates. And nobody wants that.

For testing you can get away with swapping them, but in production, go with the CH. 

- john

1 reply

John E KVAM
John E KVAMBest answer
ST Employee
October 28, 2024

The CH chips are specially chosen because they are guaranteed to run the more demanding software and still meet the framerate specifications.

The CX versions will run the CH software but are not guaranteed to do so.

If you build lots of devices, you might have unacceptable fallout rates. And nobody wants that.

For testing you can get away with swapping them, but in production, go with the CH. 

- john

EOBDAuthor
Associate II
November 6, 2024

Hi, I see. Will do!
Thanks for helping!!

(Sorry it took me so long to reply)