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DS320PR1601: GEN 5.0 REDRIVER

SHEKHA SHOUKATH
Intellectual 300 points
Part Number: DS320PR1601

Hi,

In the datasheet of DS320PR1601, on page 17 under section 6.5 DC Electrical Characteristics, I (TX-SHORT) is given as 70 mA.

Is this the maximum current drawn by the redriver?

Thanks and Regards,

Shekha Shoukath

  • 0
    TI__Genius 11750 points

    Hi Sheka,

    Technically I believe this could be interpreted as the maximum current drawn by each TX line, but in practice I don't think they should be shorted to ground without a termination resistor in between. So in operation I would expect the TX currents to be significantly lower than 70 mA. As a quick and rough reference, the typical power consumption with moderate to high EQ is given as 5.8 Watts. At 3.3 V power supply, this would be equivalent to about 1.76 A drawn from the power supply. If we divide this by 32 channels, the result is about 55 mA, and this does not account for the overhead from other device subsystems so the true per-channel current draw should be less than that. However I don't think we have this information available.

    Best,

    Evan Su

  • 0 in reply to Evan Su
    Intellectual 300 points

    Hi,

    Thanks for the reply.

    Could you please tell the maximum current drawn in a DS320PR1601RSCEVM module.

    Regards,

    Shekha Shoukath

  • 0 in reply to SHEKHA SHOUKATH
    TI__Genius 11750 points

    Hi Sheka,

    I don't think this has been measured explicitly. The maximum power consumption with EQ 5-19 and all channels active is given as 7 W, which at 3.3 V supply voltage would be equivalent to 2.12 A, this may be considered an upper bound on the current draw for the entire device.

    Best,

    Evan Su