DS90UB925Q-Q1: IDX Thresholds

ReedKacz

Hi FPD Link Experts,

Are you able to share information on the thresholds between the IDx levels? My customer is seeing some boards be at 0x1E instead of 0x1C.

It would be helpful to know for 0x1C you need to be at 502mV +/- x mV.

Thanks!
Reed

over 5 years ago

0 Charley Cai over 5 years ago

TI__Genius 12866 points

Hi Reed,

We dont have the thresholds to share. If this issue happens, please check the IDX reference voltage and the resistor tolerance to make sure they are with in datasheet spec.

What is the measured voltage at IDX pin when the issue happens?

Best Regards,

Charley Cai

0 ReedKacz over 5 years ago in reply to Charley Cai

TI__Expert 3667 points

Hi Charley,

The resistors are incorrect and being modified in the next board revision to match datasheet requirements. The voltage is 526mV.

Please advise.

Thanks,

Reed

0 Charley Cai over 5 years ago in reply to ReedKacz

TI__Genius 12866 points

Hi Reed,

In this case, i would suggest the customer to use the correct resistor values.

Best Regards,

Charley Cai

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DS90UB925Q-Q1: IDX Thresholds