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

Intellectual 1255 points

Replies: 5

Views: 266

Part Number: DS30EA101

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

BR

Shidara

  • 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

     

  • In reply to Nasser Mohammadi:

    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

  • In reply to K.Shidara:

    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

     

  • In reply to Nasser Mohammadi:

    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

  • In reply to K.Shidara:

    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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