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LO Signal Chain



		

			

									
					    highFive
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 8, 2022 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    

    The LO signal chain for the ADXUD1AEBZ converter board can use an external LO signal through the J4 connector. According to the Wiki "the recommended input power to J4 is +5 dBm".
    

    Will an input power of +5 dBm not saturate the amps? The HMC963 has a gain of 22 dB and P1dB output power of 10 dBm.
    

    What am I missing?
    

    Kind regards,
    

    Claus
    
									
			        
		
    

				
						
        

    
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jul 21, 2022 5:07 PM
            
            
					
      
	
      

		
		
      
					
      Hi Claus,
      

      I believe your observation is correct. An RF input of 5dBm should saturate the HMC963. I am not too familiar with the ADXUD1AEBZ, but maybe this could be driven at a lower RF power for optimal operation with the HMC963. This would take some investigation with my team to confirm if this is feasible.
      

      Thanks,
      

      DanO
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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