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AD9739 Production
The AD9739 is a 14-bit, 2.5 GSPS high performance RF digital-to-analog converter (DAC) capable of synthesizing wideband signals from dc up to 3.0 GHz....
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AD9739 on Analog.com

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AD9739 harmonics is larger



		

			

									
					    hejun
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 10, 2018 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Dear Sir/Madam,
    

    Currently , I do an experiment with  AD9739a-fmc-ebz-revC eval board and xilinx KC 705 FPGA platform, but when measuring the DAC output signal , I found highr harmonics .Startup initialization is similar to recommended at page 62（Data Sheet AD9737A/AD9739A）.I've generated sine wave at 250 MHz and was unpleasantly suprised by the level of harmonics, the actual wave figure please see attached pictures. What could be wrong?
    

    

     
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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