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ADRF6518 Power mode and gain question

Question asked by pbolton on Mar 1, 2016
Latest reply on Mar 1, 2016 by jdobler

I have a couple of questions regarding the ADRF6518;

 

1) Looking at the ADRF6518 eval board software I have the ability to control the "Power Mode". I can't see any reference to this in the data sheet other than comments at the start of the typical performance characteristics where the power mode is set to low. What does power mode do other than make the device more current hungry?

 

2) I have been using the gains /losses shown in the signal chain calculator as part of a larger analysis using a RF modelling tool to look at compression. The input VGAs are shown to have a gain of 0 to -24 dB. However in the data sheet the in band gain vs VGN1 shows a 24 dB control with a fixed 10 dB loss making it (roughly) -10 to -34 dB.  Which is correct?

 

Regards

 

Patrick

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