CDCV304: supply current for 2 output

dimitry chen

Expert 1145 points

Part Number: CDCV304

My design is 3v3, 100MHz,2 output

Is the supply current is the same as

Figure 1. Supply Current vs Frequency, ?

or can I suggest the value is 50% off from figure 1 current ?

over 7 years ago

0 Noel Fung over 7 years ago

TI__Guru** 110570 points

Hi Dimitry,

What is your load resistance? Figure 1 assumes the load is 70 ohms//10pF.
If you load is high-impedance, the current consumption will be must smaller.

0 dimitry chen over 7 years ago in reply to Noel Fung

Expert 1145 points

because CDCV304 have 4 output , if I only connect 2 output w/ 70 ohms//10pF.
can I suggest that the supply current will reduce to 50% ?

0 Shawn Han over 7 years ago in reply to dimitry chen

TI__Genius 9920 points

Hi Dimitry,
Output drivers contribute most of power consumption, but not all , there are other circuits in CDCV304 (Input buffer, digital control etc.)
So you can't get 50% discount.

Regards,
Shawn

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CDCV304: supply current for 2 output