• Resolved

DAC38RF85: power consumption as single tone DDS?

Intellectual 350 points

Replies: 3

Views: 78

Part Number: DAC38RF85

On July 19 you supplied an XLSX spreadsheet with power consumption data as I'd requested. It is very useful.

Looking at it carefully now, it is missing the current and power on several of the power supply inputs.

They are VDDIO18, VDDAVCO18, VDDS18, and VDDTX1. It is possible that these currents were grouped with other power pins.

Or, they are low or no current and simply left off the spreadsheet. Can this please be clarified? Thank you.

There was a VDDVCO current shown as 0 mA. Is this the sane as the VDDAVCO18 power supply input?

  • Guru 51090 points


    We are looking into this.



  • Guru 51090 points


     For the measurements, the following was done:


    VDDTx1 and VDDPLL are tied together.

    VDDS, VDDIO18, and VDDR are tied together.

    VDDAVCO and VDDVCO are the same and 0 mA because internal PLL is off.





  • In reply to jim s:

    Thank you, and regards.

    Doug P.