AFE4490: LED supply query and schematic feedback

BImal Makwana

Part Number: AFE4490

Hi,

We are using AFE4490 with the Common anode LED configuration. For which i have below queries:

1) For LED Common anode configuration do we still require to provide supply for LED_DRV_SUP and TX_CTRL_SUP pins of AFE4490? or they can be left unconnected? below image with highlighted portion.

2) Also would be great if you can review below schematic snap of AFE4490 section and provide your feedback if any.

over 1 year ago

0 ChienChun Yang over 1 year ago

TI__Mastermind 19815 points

Hi,

will need to discuss with my team and try to get back to you around 4/14.

Thanks

0 ChienChun Yang over 1 year ago

TI__Mastermind 19815 points

Hi,

Regarding to the LED_DRV_SUP and TX_CTRL_SUP pins,

both are needed. you may take a look of this thread-

https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/395363/afe4490-connection-for-led-in-common-anode-mode

Thanks

0 BImal Makwana over 1 year ago in reply to ChienChun Yang

Prodigy 60 points

Any feedback on the schematic design?

0 ChienChun Yang over 1 year ago in reply to BImal Makwana

TI__Mastermind 19815 points

Hi,

Schematic review will take some more time, I will try to get back to you around 4/17.

Thanks

0 ChienChun Yang over 1 year ago in reply to ChienChun Yang

TI__Mastermind 19815 points

Hi,

Schematic review with comments.

AFE4490SchematicReview from e2e.pdf

Thanks

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AFE4490: LED supply query and schematic feedback