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Selecting oscillator ADV7280A-M



		

			

									
					    Shmuel.ili
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 3, 2022 
				
			
			
		
    

				
		
    
		    		    
		    
		    		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  ADV7280A-M 
    
    		        		    		    	
			
    Hi,
    I'm using ABM11-28.63636MHZ-D2X-T3 as the ADV7280A-M oscillator.
    Is this oscillator fit the device requirments?
    BR
    Shmuel
    
									
			        
		
    

				
						
        

    
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                 ADV7280A-M
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		






				

			
    
			
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												    FormerMember
											
      
					
      
						
							
															FormerMember
													
												
						
                		
    
				
						
						                		
						
						
						
																					
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    The 100 Ohm part may work but you will probably have to change the load caps.  You can only 100% verify what the new load caps are when you have the final board to test with.
    
				    
			
											
													
								
		
    
		
    
					
    
	
	
    















    
	
    
	
    
					



			








	
	
	
	



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							FormerMember
					
      
		
      
			
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									FormerMember
							        
			
			
			
    
            
			                            
                                                                                                                        
            
				
			
            
					
    
	
    

		
		
    
					
    Tolerance is good.  The schematics normally use a 30Ohm crystal.  You may have to tweak the load caps or change to a low series resistance crystal.
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    


	

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													0
							
			
				
									
							        
			
			
			
      
            
			                            
                                                                                                                        
            
				
			
            
												
						in reply to FormerMember
					
									
      
	
      

		
		
      
					
      Hi,
      

      At the ABM11-28.63636MHZ-D2X-T3 data sheet the ESR is 100 ohm. Is it OK?
      

      What's the load caps and series resistance values?
      

      BR
      

      Shmuel
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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							FormerMember
					
      
		
      
			
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									FormerMember
							        
			
			
			
            
			                            
                                                                                                                        
            
				
			
            
												
						in reply to Shmuel.ili
					
									
      
	
      

		
		
      
					
      The goal is to get the crystal to spin and maintain tolerance over temp.  Here's an app note on our video crystal oscillators.
      

        PDF
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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							FormerMember
					
        
		
        
			
													0
							
			
				
									FormerMember
							        
			
			
			
      
            
			                            
                                                                                                                        
            
				
			
            
												
						in reply to Shmuel.ili
					
									
      
	
      

		
		
      
					
      The goal is to get the crystal to spin and maintain tolerance over temp.  Here's an app note on our video crystal oscillators.
      

        PDF
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      





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						in reply to Shmuel.ili
					
									
	

		
		
      
					
      The 100 Ohm part may work but you will probably have to change the load caps.  You can only 100% verify what the new load caps are when you have the final board to test with.