[hpsdr] New chip

[Alberto I2PHD]

Could this new analog multiplier from AD be used instead of a QSD on the HORTON board ?
 From the marketing blurb :

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ADL5391 - DC to 2.0 GHz Symmetric Multiplier
   	
	Product Description 	
	

The ADL5391 draws on three decades of experience in advanced analog multiplier products. It provides the same general 
mathematical function that has been field-proven to provide an exceptional degree of versatility in function synthesis:

VW=α×(VXx VY)/1V + VZ

The most significant advance in the ADL5391 is the use of a new multiplier core architecture, which differs markedly 
from the conventional form that has been in use since 1970. The conventional structure, employing a current-mode, 
trans-linear core, is fundamentally asymmetric with respect to the X and Y inputs, leading to relative amplitude and 
timing misalignments that are problematic at high frequencies. The new amplifier core eliminates these misalignments by 
offering absolutely symmetric signal paths for both X and Y inputs. The Z input allows a signal to be added directly to 
the output. This can be used to cancel a carrier or to apply a static offset voltage.

The ADL5391 is fabricated on Analog Devices' proprietary, high performance 65 GHz SOI complementary SiGe bipolar IC 
process. It is available in a 16-lead Pb-free LFCSP package and operates over a -40°C to +85°C temperature range. 
Evaluation boards are available.
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73  Alberto  I2PHD