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yundy
Visitor II
March 9, 2021
Solved

L3GD20H fake IC issue

  • March 9, 2021
  • 1 reply
  • 864 views

It is flight controller board for drone.

In the schematic is written it is L3GD20H.

Is it correct?

I think it is fake chip.

Also output data was not good in changing temperature environment.

0693W000008wLq1QAE.png

    This topic has been closed for replies.
    Best answer by Eleon BORLINI

    Hi @yundy​ ,

    you are right, the L3GD20H top package marking should be similar to the following one:

    0693W000008wNqXQAU.jpgwhere, in particular, the "3GDH" marking stands for L3GD20H.

    You can double-check whether this is the right device by reading the WHO_AM_I (0Fh) register: you should get back value D7h, as reported in the datasheet, p.36.

    If my reply answered your question, please click on Select as Best at the bottom of this post. This will help other users with the same issue to find the answer faster.

    -Eleon

    1 reply

    E
    Eleon BORLINIAnswer
    ST Employee
    March 9, 2021

    Hi @yundy​ ,

    you are right, the L3GD20H top package marking should be similar to the following one:

    0693W000008wNqXQAU.jpgwhere, in particular, the "3GDH" marking stands for L3GD20H.

    You can double-check whether this is the right device by reading the WHO_AM_I (0Fh) register: you should get back value D7h, as reported in the datasheet, p.36.

    If my reply answered your question, please click on Select as Best at the bottom of this post. This will help other users with the same issue to find the answer faster.

    -Eleon

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