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DS125BR820: how many dB the device can support for the speed 6G SATA? If the customer wants larger EQ/CTLE, do we have other suggestions?

Frank Xiao
Genius 12055 points
Part Number: DS125BR820
Other Parts Discussed in Thread: DS125BR800

Hi team,

my customer wants to use DS125BR820 for 6Gbps SATA, how many dB the device can support for the speed? If the customer wants larger EQ/CTLE, do we have other suggestions? Thanks.

  • 0
    TI__Guru* 93670 points
    Hi Frank,
    DS125BR820 is a linear equalizer therefore the gain is limited to about 10dB.

    Whether we should use a low gain linear equalizer like DS125BR820 or another equalizer with much higher gain (for example DS125BR800) depends on at what point within the signal path DS125BR820 or other equalizer would be used. This means signal insertion loss would determine the appropriate device for this application. To recommend appropriate device, please send us a block diagram describing signal loss within the signal path. Meanwhile, beside DS125BR820 you can also take a look at DS125BR800 data sheet as well.

    Regards,,nasser