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ADMV1014 QUAD_FILTER settings



		

			

									
						daedalus
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 23, 2021 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hello.
    

    The ADMV1014 datasheet shows 4 settings for the 4 bit QUAD_FILTER register, used to set the LO filter:
    

     
    

    Is it possible to use settings other than the ones shown in the table?    If so, what is the response for the other settings?
    

    No worries if this data is not available.  I was just wondering if more optimal settings are known for a given LO frequency to suppress 5/4 LO (for instance).
    

    Thanks for the help.
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

					
    
			
    


    

	















    
	
    
	
    
					



			


				
	









	
      
	

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													+1
							
			
				
									
							        
			
			
			
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                on Mar 30, 2021 2:31 PM
            
            
					
      
	
      

		
		
      
					
      Hi,
      

      Thanks for your question. These are the 4 configurations implemented on the part. Using other values might cause erratic behavior. Could you tell me your requirements for the LO suppression that the application needs? I suggest referring to the LO spur frequency from the input of the ADMV1014 and not the mixer as that is the method that the datasheet uses.
      

      Thanks, 
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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