AFE4400 / Photodiode-Side Fault Detection

K.Yaita

Other Parts Discussed in Thread: AFE4400

Hi Team,

I found the following figure about Photodiode-Side Fault Detection.
Could you tell me the procedure of open and short diagnostic?

I understood the threshold of open fault resistance is >100kΩ and short fault resistance is <10kΩ, but couldn't catch the procedure.

Best Regards,
Yaita / Japan disty

over 10 years ago

0 Praveen Aroul over 10 years ago

TI__Mastermind 49956 points

Yaita-san,

I have outlined the diagnostic procedure in the following E2E post.

e2e.ti.com/.../951700

0 K.Yaita over 10 years ago in reply to Praveen Aroul

Guru 29720 points

Hi Praveen-san,

I saw your post but I would like to know how does AFE4400 make diagnoses open and short.
I found the following schematic but couldn't catch it.

Best Regards,
Yaita

0 Praveen Aroul over 10 years ago in reply to K.Yaita

TI__Mastermind 49956 points

Hello Yaita-san,

Unfortunately we will not be able to share the operation of the diagnostics in an open forum since the diagnostic mode has TI IP blocks.

Data converters

Data converters forum

AFE4400 / Photodiode-Side Fault Detection