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L3GD20H fake IC issue

yundy
Associate

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

1 ACCEPTED SOLUTION

Accepted Solutions
Eleon BORLINI
ST Employee

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

View solution in original post

1 REPLY 1
Eleon BORLINI
ST Employee

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