AnsweredAssumed Answered

ADL5380 performance above 6Ghz and below 400MHz

Question asked by aerskine on May 5, 2010
Latest reply on May 5, 2010 by aerskine

The ADL5380 has a very wide LO and RF operating frequency range but I appreciate that the part is characterized over three separate frequency bands: low band, mid band and high band, and that any discussion of specifications assumes transformers or balus on RF/LO ports which are appropriate for the frequency.

 

Bearing that in mind...three questions about the ADL5380

a) Are any performance measurements taken at over 6GHz? What specifications degrade at >6GHz? Is the part at all usable at > 6GHz with the correct input/LO coupling.

(from the datasheet plots of High-band performance, I can see

- IQ Quadrature Phase error rapidly increasing (figure 38)

- Gain rolling off by 1-2dB (figure 33)

- noise figure increasing (figure 37)

 

b) Are any performance measurements taken at under 400MHz? What specifications degrade at at <400MHz? Is the part at all usable at <400MHz with the correct input/LO coupling

(from the datasheet plots of low band performance, I can only see

- IQ Quadrature Phase error rapidly increasing (figure 8)

 

c) If the RF input is driven single ended, with the other input decoupled to ground, will the part work at all? If so, what specs will suffer?

 

Thanks and best regards

Andrew

Outcomes