Products Mentioned

AD8156 Not Recommended for New Designs
The AD8156, a member of the Xstream line of products, is a high speed, fully differential, digital crosspoint switch. The part can function as a 4 × 4...
Datasheet
AD8156 on Analog.com

ADN4612 Recommended for New Designs
The ADN4612 is a 12 × 12 asynchronous, protocol agnostic, digital crosspoint switch with 12 differential PECL-/CML-compatible inputs and 12 differential...
Datasheet
ADN4612 on Analog.com

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AD8156 and ADN4612 in HDMI application



		

			

									
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  •  Analog Employees  

			
			
			    	
			                    
                
				                on Jun 3, 2016 
				
			
			
		


				
		

		    		    
		    
		    	
			
Can I use AD8156 and ADN4612 in HDMI 2.0 applications. They want to know whether these switches will work with HDMI 2.0 protocol. Thread 36599 on ADI’s Engineer Zone states “The ADN4612 is an asynchronous, protocol agnostic crosspoint switch, which means it can support any protocol (assuming NRZ modulated)”. 

 
I have searched and cannot tell whether HDMI is NRZ modulated. Can you please confirm whether AD8156 and ADN4612 can natively switch HDMI 2.0.

 
 Thanks,

									
			        
		


				
						
        

    
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                 adn4612
                
                                                    
                 ad8156 adn4612 hdmi*
                
                                                    
                 Data Path Management
                
                                                    
                 ad8156
                
                                                    
                 Digital Crosspoint Switches
                
                                
            

    
    

		

			
						
									
									
						
						
			
			
			
			
		


        
        

					

			





















	

	

					



			


				
	









	
    
	

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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Jun 7, 2016 8:46 PM
            
            
					
    
	
    

		
		
    
					
    Hi,
    
 
    Both the ADN4612 and AD8156 will support the HDMI 2.0 TMDS data rates of 6.0Gbps. HDMI is NRZ modulated. The asynchrnonous data path in both products is protocol agnostic and supports NRZ modulated signals from DC to the maximum data rate specified.
    
 
    Regards,
    
 
    Jarrod
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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                on Jul 6, 2016 6:39 PM
            
            
					
      
	
      

		
		
      
					
      Hi Jarod,
      
 
      As a follow-up to the above question, what circuitry would you advise to actually interface the HDMI inputs and HDMI outputs to the crosspoint switch since the electrical characteristics are not the same?  Or is there a way to configure the crosspoint to be compatible with the TMDS?
      
 
      Thanks
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jul 11, 2016 6:28 PM
            
            
					
      
	
      

		
		
      
					
      Hi,
      
 
      The ADN4612 VTTI and VTTO supplies operate at 1.8V and 2.5V respectively and therefore they must be AC-coupled to be compatible with HDMI interfaces. AC-coupling is acceptable in the HDMI standard as long as the HDMI receiver or HDMI transmitter provide a 50-ohm single-ended or 100-ohm differential termination to the 3.3V supply.
      
 
      Regards,
      
 
      Jarrod
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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