• State Verified Answer
  • +1 person also asked this people also asked this
  • Replies 5 replies
  • Subscribers 80 subscribers
  • Views 805 views
  • Users 0 members are here
Options
Related 

        

            Post
             Go back to editing
        

    

    


    

    









		












	
	
			
	
			
		
	
	
		

		
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
    
									
			        
		
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		






				

			
    
			
    Top Replies
    
		
    

		
    
			
      
												
							
    • 
				
      
					
      
												    FormerMember
											
      
					
      
						
							
															FormerMember
													
												
						
                		
    
				
						
						                        
                                                
                        
                                                	 Oct 6, 2022 
						
										
						
																					
									in reply to Shmuel.ili
								
																			+1
													
									verified
							
											
    
				
    
				
					
    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.
    
				    
			
											
													
								
		
    
		
    
					
    
	
	
    















    
	
    
	
    
					



			








	
	
	
	



Parents
	
      
	

    • 
	
      



	
		
	
	



      
	
      
		
      
							FormerMember
					
      
		
      
			
													0
							
			
				
									FormerMember
							        
			
			
			
    
            
			                            
                        
                on Oct 3, 2022 10:54 AM
            
            
					
    
	
    

		
		
    
					
    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.
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    


	

  • 
	
    



	
		
	
	



    
	
    
		
    
							
					
    
		
    
			
													0
							
			
				
									
							        
			
			
			
      
            
			                            
                        
                on Oct 3, 2022 11:04 AM
            
            
												
						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
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

      • 

	

    • 
	
      



	
		
	
	



      
	
      
		
      
							FormerMember
					
      
		
      
			
													0
							
			
				
									FormerMember
							        
			
			
			
            
			                            
                        
                on Oct 3, 2022 12:06 PM
            
            
												
						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
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

      • 

	



Reply

        


      • 
	
        



	
		
	
	



        
	
        
		
        
							FormerMember
					
        
		
        
			
													0
							
			
				
									FormerMember
							        
			
			
			
      
            
			                            
                        
                on Oct 3, 2022 12:06 PM
            
            
												
						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
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      





Children
	
            
			                            
                        
                on Oct 6, 2022 9:15 AM
            
            
												
						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.