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Question about HMC914LP4E



		

			

									
					    Kazu
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Dec 24, 2015 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi All,
    
 
    I have some questions about our circuit design (HMC659+HMC914).
    
 
    Please help take a look at the attachment and give me some advice. Thank you.
    
 
    Regards,
    
 
    Kazumasa
    
									
			        
		
    

				
							QuestionaboutHMC914.pdf
							
        

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jan 4, 2016 1:37 PM
            
            
					
      
	
      

		
		
      
					
      Hi Kazumasa,
      
 

      
 
      HMC914 input is a CML and the input common mode is equal to VDD. The 3.3V +/-0.4 is an acceptable spec. The AMR should be updated to 
      
 
      min: VDD-1.3V
      
 
      max: VDD+0.5V
      
 

      
 
      We do not recommend operating the input over VDD+0.5V.
      
 

      
 
      Let us know if you have additional questions or comments. 
      
 

      
 
      Thanks
      
 
      Ahmet
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jan 4, 2016 1:37 PM
            
            
					
      
	
      

		
		
      
					
      Hi Kazumasa,
      
 

      
 
      HMC914 input is a CML and the input common mode is equal to VDD. The 3.3V +/-0.4 is an acceptable spec. The AMR should be updated to 
      
 
      min: VDD-1.3V
      
 
      max: VDD+0.5V
      
 

      
 
      We do not recommend operating the input over VDD+0.5V.
      
 

      
 
      Let us know if you have additional questions or comments. 
      
 

      
 
      Thanks
      
 
      Ahmet
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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