DS110DF410: CTLE Gain variation between part to part

Kawai

Guru 19775 points

Part Number: DS110DF410

Hi Team,

How much dB would the DS110DF410 EQ gain setting vary from part to part for each setting ?

We are asked from our customer because they are facing error in some system using at fixed CTLE mode.

Best Regards,

Kawai

over 5 years ago

0 Nasser Mohammadi over 5 years ago

TI__Guru* 93330 points

Hi Kawai-San,
This has not been characterized on DS110DF410 device. However, based on looking at some devices using the same process there could 3-4dB across VCC and temperature as well. Theoretically, we should use a fixed CTLE setting such that It would provide good HEO/VEO value with margin. So if there is a shift in CTLE setting it would cause a major issue.
Regards,,nasser

0 Kawai over 5 years ago in reply to Nasser Mohammadi

Guru 19775 points

Hi Nasser-san,

Thanks for the information.

Have you ever faced a problem due to this process variation of the CTLE gain when customer used in the fixed CTLE mode ?

Best Regards,
Kawai

0 Nasser Mohammadi over 5 years ago in reply to Kawai

TI__Guru* 93330 points

Hi Kawai-San,

With adapt mode 0, I expect at cold gain would be higher versus ambient or hot. So the suggestion is to set adapt mode 0 CTLE settings at hot with about 0.5UI HEO and 200mV VEO. Then go to cold and I expect to see higher HEO and VEO.

Regards,,nasser

0 Kawai over 5 years ago in reply to Nasser Mohammadi

Guru 19775 points

Hi Nasser-san,

Thank you for the information.

Best Regards,
Kawai

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DS110DF410: CTLE Gain variation between part to part