DS30EA101: Which should be used for 1.2Gbps, DS15EA101 or DS30EA101?

K.Shidara

Part Number: DS30EA101
Other Parts Discussed in Thread: DS15EA101,

Hi team,

Since the data rate the customer want to use this time is 1.2 Gbps,
I thought DS15EA101 for 1.5 Gbps was reasonable as an equalizer,
Because I did not have an evaluation kit, I purchased DS30EA101 for 3.0 Gbps.
However, when evaluated, DS30EA101 seemed to be slightly unsatisfactory in characteristics.
So there is a question, but when using at 1.2 Gbps,
Is there anything that the DS15EA101 can handle a larger transmission path loss (the equalizer's capability at 1.2 Gbps is higher)?
Is it possible to replace DS15EA101 with the DS30EA101 evaluation kit land pattern?

Thanks

Shidara

over 5 years ago

0 Nasser Mohammadi over 5 years ago

TI__Guru* 88835 points

Hi Shidara-San,

EQ boost at 1.2Gbps or 1.5Gbps could be different for DS15EA101 versus DS30EA101. DS30EA101 has a much newer process technology versus much older DS15EA101.

Please note DS30EA101 operates at 2.5V versus DS15EA101 which operates at 3.3V. Other than this, they are pin compatible.

Regards,,,nasser

0 K.Shidara over 5 years ago in reply to Nasser Mohammadi

TI__Expert 3225 points

Hi Nasser-san

Thank you very much for your answer.

Regarding to pin compatibility, pin5 and pin6 in DS15EA101 are cap+ and cap- whereas

DNC(Do not connect) and DNC in DS30EA101. Should we leave open in case of DS30EA101 for pin#5,6?

I understood VCC voltage difference.

Do you recommend much newer process EQ boost device?

Thanks

Best regards,

Shidara

0 Nasser Mohammadi over 5 years ago in reply to K.Shidara

TI__Guru* 88835 points

Hi Shidara-San,

1). Yes you can leave pins 5 & 6 DNC on DS30EA101. If there is a 1uF Cap+ and Cap - these don't cause any harm.

2). DS30EA101 has lower power -due to the newer process. This depends on the customer designer preference. Either device can be used.

Regards,,,nasser

0 K.Shidara over 5 years ago in reply to Nasser Mohammadi

TI__Expert 3225 points

Hi Nasser-san

Thank you so much.

The customer expect DS30EA101 do peaking at 3 Gbps.

It is not optimal for a signal of 1.2 Gbps,

The customer thinks that it is better to use DS15EA101 of 1.5 Gbps.

Is this recognition correct?

Thanks

Best regards,

Shidara

0 Nasser Mohammadi over 5 years ago in reply to K.Shidara

TI__Guru* 88835 points

Hi Shidara-San,

I believe at 1.2Gbps data rate both DS15EA101 and DS30EA101 have the same performance. These devices are derived from SDI equalizers and these parts have the same performance at this data rate.

Regards,,nasser

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DS30EA101: Which should be used for 1.2Gbps, DS15EA101 or DS30EA101?