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AD9783 for new project



		

			

									
					    Vishnu
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Aug 19, 2019 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    

    We are intending to use AD9783 for our new TETRA base station application.
    

    Please suggest if it is active production (Recommended for new projects).
    

    I posted a few questions regarding this device and not getting any answers (link to the questions are given below).
    

    We made a prototype and experiencing thermal problems related to this DAC. I posted several questions regarding this and failed to get answers.
    

    Now we intend to change the device.
    

    We have used AD9125 before and they have not specified any thermal degradation in the specification. AD9783 graphs show degradation in INL and DNL due to thermal variation.
    

    

    https://ez.analog.com/data_converters/high-speed_dacs/f/q-a/23248/ad9783-bist-functionality
    

    https://ez.analog.com/data_converters/high-speed_dacs/f/q-a/114866/ad9783-aclr-degration-for-pi-4-dqpsk-signal-over-temperature
    

    https://ez.analog.com/data_converters/high-speed_dacs/f/q-a/97334/ad9783-temp-stability
    

    

    Please reply.
    

    Regards,
    

    Vishnu R.
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			








	
	
	
	



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													+1
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Nov 14, 2019 4:54 PM
            
            
												
						in reply to Vishnu
					
									
      
	
      

		
		
      
					
      So sorry for this slipping through for so long.  Just in case you are still needing answers, here is a start.
      

      The AD9783, as indicated on the product page is still in full production and can be used in new designs. One temperature related adjustment that may need to be made (depending on the DAC clock rate) is in the data input timing.  See the "OPTIMIZING THE PARALLEL PORT TIMING" section of the data sheet for details.
      

      It sounds like you have moved on to the AD9125.  This or the AD9121/22 would be our recommendation above 250Msps DAC rates.
      

      Please confirm that you no longer need support for the AD9783 and I will close this case.  Again, my apologies for not getting back to you sooner
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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													+1
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Nov 14, 2019 4:54 PM
            
            
												
						in reply to Vishnu
					
									
      
	
      

		
		
      
					
      So sorry for this slipping through for so long.  Just in case you are still needing answers, here is a start.
      

      The AD9783, as indicated on the product page is still in full production and can be used in new designs. One temperature related adjustment that may need to be made (depending on the DAC clock rate) is in the data input timing.  See the "OPTIMIZING THE PARALLEL PORT TIMING" section of the data sheet for details.
      

      It sounds like you have moved on to the AD9125.  This or the AD9121/22 would be our recommendation above 250Msps DAC rates.
      

      Please confirm that you no longer need support for the AD9783 and I will close this case.  Again, my apologies for not getting back to you sooner
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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