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AD9961 Recommended for New Designs
The AD9961/AD9963 are pin-compatible, 10-/12-bit, low power MxFE® converters that provide two ADC channels with sample rates of 100 MSPS and two DAC channels...
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AD9961 on Analog.com

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AD9961 unused pins?



		

			

									
					    SDRF
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Aug 11, 2021 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Is there any termination advice for unused pins on the AD9961/3?
    

    For example, I'm planning on only using half duplex mode--can I leave TXD[0:9] unconnected?
    

    Can I leave AUX33V unconnected if I'm not planning on using the AUX ADCs?
    

    Thanks!
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 High Speed A/D Converters >10 MSPS
                
                                                    
                 ad9961
                
                                                    
                 Mixed-Signal Front Ends (MxFE)
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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							FormerMember
					
      
		
      
			
													0
							
			
				
									FormerMember
							        
			
			
			
    
            
						
                            
            
            				
            
                on Aug 30, 2021 10:54 AM
            

            
					
    
	
    

		
		
    
					
    Hello,
    

    Suggest that you tie TXD11 to TXD0 TxDAC Input Data (pins 39 to 50) to GND by 1st connection all pins together and then using 1 kohm resistor to connect this node to GND.  With regard to AUX33V..........suggest that you still apply 3.3 V supply to it.
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    


	



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							FormerMember
					
      
		
      
			
													0
							
			
				
									FormerMember
							        
			
			
			
    
            
						
                            
            
            				
            
                on Aug 30, 2021 10:54 AM
            

            
					
    
	
    

		
		
    
					
    Hello,
    

    Suggest that you tie TXD11 to TXD0 TxDAC Input Data (pins 39 to 50) to GND by 1st connection all pins together and then using 1 kohm resistor to connect this node to GND.  With regard to AUX33V..........suggest that you still apply 3.3 V supply to it.
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    





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