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ADRF6720-27 evaluation board output power

Hi,

we plan to use ADRF6720-27 in our project,

but we can't achieve output power which mentioned in datasheet at the evaluation board output. 

for example for output freq. 1.9GHz (2.7V input bias, 0.5Vpp at each of 4 BB inputs) output power is only 3.3dBm and according to datasheet it should be 4.5dBm. 

Should we consider this 1.2 dB as a losses of the eval board?

Thanks,

Sergey

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  • Hi Sergey,

    Sorry for late.

    I don't have the trace loss data on evaluation board but it would not be that much. I may be around 0.5dB at that frequency(1.9GHz). Some portion of output power difference can be from part-part variation as you can see it on Figure 4. It is about 0.4dB (4.2~4.6dBm @ 1.9GHz, 25C). And make sure input voltage is 1Vp_p differential at the pins on DUT and assuming the cable loss is calibrated out. It is not exact trace loss information but I wish it helps you.

    Regards

    Tony 

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  • Hi Sergey,

    Sorry for late.

    I don't have the trace loss data on evaluation board but it would not be that much. I may be around 0.5dB at that frequency(1.9GHz). Some portion of output power difference can be from part-part variation as you can see it on Figure 4. It is about 0.4dB (4.2~4.6dBm @ 1.9GHz, 25C). And make sure input voltage is 1Vp_p differential at the pins on DUT and assuming the cable loss is calibrated out. It is not exact trace loss information but I wish it helps you.

    Regards

    Tony 

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