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HMC869 Obsolete
The HMC869LC5 is a GaAs MCM I/Q downconverter in a leadless RoHS compliant SMT package. This device provides a small signal conversion gain of 14 dB with...
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HMC869 on Analog.com

AD605 Production
The AD605 is a low noise, accurate, dual-channel, linear-in-dB variable gain amplifier (VGA), optimized for any application requiring high performance...
Datasheet
AD605 on Analog.com

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HMC869 AD605 interface



		

			

									
					    smutha
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Nov 12, 2015 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hello,
    
 
          We have interfaced the HMC869 output (single ended) to the AD605 with a 69.8E shunt resistor and 0.1uF series capacitor. 
    
 
    We are not getting the IF (20MHz) from the output of the HMC869 at the desired level, infact it is much lower (60dB lower). 
    
 
    Please advise if the interface between the HMC869 and the AD605 is ok?
    
 
    Thank you for your time in advance,
    
 
    Regards.