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AD9746 Production
The AD9743/AD9745/AD976/AD9747 are pin-compatible, high dynamic range, dual digital-to-analog converters (DACs) with 10-/12-/14-/16-bit resolutions and...
Datasheet
AD9746 on Analog.com

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AD9746 SFDR



		

			

									
					    sin
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 23, 2016 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi
    
 
    I have a couple of questions about AD9746.
    Datasheet says that SFDR is 82, 70 and 66 dBc in the individual conditions.
    Do these values represent the specifications to 2nd/3rd harmonic distortion or not ?
    I wonder if these values represent the specifications to the noise in the Nyquist band.
    Please let me know the definition of SFDR in the datasheet of AD9746.
    
 
    Best Regards
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on Apr 27, 2016 3:47 AM
            
            
					
      
	
      

		
		
      
					
      The spurs sown I the attached spectrum capture are not harmonics caused by the AD9746. They may be due to a timing problem on the input data and clock. Setup and hold times between CLKP/CLKN and P1D and P2D busses are worth looking at. As well as the amplitude of CLKP/CLKN relative to table 5 in the data sheet.
      
 
      Thanks
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Apr 27, 2016 3:47 AM
            
            
					
      
	
      

		
		
      
					
      The spurs sown I the attached spectrum capture are not harmonics caused by the AD9746. They may be due to a timing problem on the input data and clock. Setup and hold times between CLKP/CLKN and P1D and P2D busses are worth looking at. As well as the amplitude of CLKP/CLKN relative to table 5 in the data sheet.
      
 
      Thanks
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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