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Original question:

DAC5675-EP: lowering Clk speed and reducing power consumption?

DAC5675-EP: Data for power consumption vs. sampling rate

Graeme Smecher
Intellectual 415 points
Part Number: DAC5675-EP
Other Parts Discussed in Thread: DAC5652-EP, DAC5662-EP, DAC5672-EP, DAC5687-EP, DAC5670-SP

Do you have any data points or a graph showing power consumption as a function of sampling rate?

For example, see the AD9146 datasheet (ADI), on pg. 43. There is enough information present to extrapolate power dissipation down to even very low sampling rates. We are looking at somewhere near 20 MSPS and if the DAC5675-EP follows a similar trend to the AD9146, for example, we'd be over the moon.

thanks,
Graeme

  • 0
    TI__Genius 14540 points

    I am not aware of any data showing current consumption over clock speed.  Let me defer to the team that developed this device to see if they are aware of such data.

    Thanks

    Christian

  • 0 in reply to Christian Yots
    Intellectual 415 points

    Hi Christian,

    Since you are going to the factory: There are several DACs with similar specifications (and presumably similar silicon) I'm trying to rank. In all cases, the datasheets are relatively complete except for power consumption at reduced sampling rates.

    - DAC5675-EP
    - DAC5652-EP
    - DAC5662-EP
    - DAC5672-EP
    - DAC5687-EP
    - DAC5675-EP
    - DAC5670-SP (yes, this is a space-qual part)

    If these parts have similar architecture (hence power dissipation), then it would be helpful to know power scaling data for any one of them along with a grouping of which parts are expected to scale similarly.

    thanks,
    Graeme

  • 0 in reply to Graeme Smecher
    Intellectual 415 points

    Hi Christian,

    Just wondering if you've had a chance to follow up on this posting. In case it helps, I'd prefer a partial response (sooner) to a complete response (later). As always, please ask if you or the development team needs clarification.

    best,
    Graeme