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Original question:

AFE4490 - Diagnostics query

AFE4490: Diagnostics in Push pull configuration

Dattatraya Bathe
Prodigy 40 points

Part Number: AFE4490

Tool/software:

Hi,

We are using AFE4490 in one of our designs. We are using a push pull configuration with common anode connection for the LED. We are facing problems for detecting LED shorts. Mainly the LED which is connected between TXP and drive. We are using IR LED to be controlled by TXP.

How does LED diagnostics work in Push pull configuration? Is there anything we need to do extra to get the LED short detection working?

Thanks and regards

Dattatraya