Products Mentioned

ADV7180 Not Recommended for New Designs
The ADV7180 automatically detects and converts standard analog baseband television signals compatible with worldwide NTSC, PAL, and SECAM standards into...
Datasheet
ADV7180 on Analog.com

LT6550 Production
The LT6550/LT6551 are 3.3V triple and quad high speed video amplifiers. These voltage feedback amplifiers drive double terminated 50Ω or 75Ω cables and...
Datasheet
LT6550 on Analog.com

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adv7180 sync signal

		
	
				

			

									
					    dn1993
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 12, 2019 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    Hi,
    

    I see that the ADV7180 have a autodetect sync signal. I have a RGB SOG (sync on green) video signal that I convert into YPbPr using the LT6550 amp (RGB is not supported by ADV7180).
    

    My question is: After the conversion from RGB SOG to YPbPr the sync signal is on Y? the device ADV7180 is able to detect it?
    

    regards,
    

    Dario
    
			
    
			
									
		                             
                        

    
    
                                            
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							FormerMember
					
      
		
      
		    
		    		    
			
				
									FormerMember
							        
			
			
			
    
            
						
                            
            
            				
            
                on Mar 12, 2019 10:41 AM
            
            
						
			            		
    
		
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    As long as the resulting YPbPr has the correct sync timing pulse widths you should be OK.
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    


	

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                on Mar 12, 2019 12:05 PM
            
            
												
						in reply to FormerMember
					
										
			            		
      
		
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      ok thanks, I think that the problem is that if I have the sync only on Green and I convert into YPbPr the sync signal is not as low as if the sync is in all the component (RGB). do you know the low minimum limit for the device to detect the sync?
      

      many thanks,
      

      Dario
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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