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AD9084 Recommended for New Designs
The mixed signal front-end (Apollo MxFEâ„¢ ) is a highly integrated device with a 16-bit, 28GSPS maximum sample rate, RF digital-to-analog converter (DAC...
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AD9084 on Analog.com

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Unused JESD Pins

		
	
				

			

									
					    jakeh
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 17, 2026 
				
			
			
		
    
		
		                    	    
    
        	    
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                The user inquired about using the AD9084 with a JESD controller that supports 32 lanes (16Rx/16Tx). The AD9084 supports up to 24 lanes (12Tx/12Rx per side) and can be configured as single or dual links. Unused pins should be powered down by firmware and can be left floating.
                        	    
    
                
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    Category: Hardware
    
    		        		            		    
    Product Number:  AD9084  
    
    		        		    		    
    
		    		    
		    			
    
			    
    I'm currently working on an AFE hardware design using the AD9084, the JESD controller being used can provide 32 lanes (16Rx/16Tx). Can the AD9084 support this? If so, are there specific pins that should be used and any care to be taken to unused pins?
    

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Apr 20, 2026 1:02 PM
            
            
						
			            		
      
		
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      The AD9084 supports a total of 24 transmit lanes and 24 receive lanes. It has two sides, with each side supporting up to 12 TX and 12 RX lanes. Each side can be configured either as a single link with 12 lanes or as dual links with 6 lanes per link. Whether this configuration works, and which pins need to be used, depends on the specific use case. Please refer to the user guide for more details. The unused pins must be powered down by firmware, so I think it is OK to leave them floating.
      

      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
				
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Apr 20, 2026 1:02 PM
            
            
						
			            		
      
		
										+1
					
	
      

		
		
      
		
      
                                
                                                            
      
					
      The AD9084 supports a total of 24 transmit lanes and 24 receive lanes. It has two sides, with each side supporting up to 12 TX and 12 RX lanes. Each side can be configured either as a single link with 12 lanes or as dual links with 6 lanes per link. Whether this configuration works, and which pins need to be used, depends on the specific use case. Please refer to the user guide for more details. The unused pins must be powered down by firmware, so I think it is OK to leave them floating.
      

      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
				
				
				
		
		
      
			
		
      
	
      

      

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