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AD9508 Recommended for New Designs
The AD9508 provides clock fanout capability in a design that emphasizes low jitter to maximize system performance. This device benefits applications like...
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AD9508 on Analog.com

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AD9508 Input Clock Frequency Changes

		
	
				

			

									
					    KonradZ
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 7, 2025 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquired about using the AD9508 as a frequency divider by 2, specifically whether it can handle rapid input frequency changes from 250 MHz to 1 GHz. The final answer confirms that the AD9508 can handle such variations, though the exact time for the transition is not specified. The engineer suggests that the transition might occur within a few nanoseconds in SPI mode.
                        	    
    
                
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    Category: Datasheet/Specs
    
    		        		            		    
    Product Number:  AD9508  
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi,
    

    I want to use the AD9508 as a frequency divider by 2, without utilizing its phase adjustment functionality. My main concern is whether the chip can handle variations in the input signal frequency. For example, would it be an issue if the input frequency changes from 250 MHz to 1 GHz within a few microseconds ?
    
			
    
			
									
		                             
                        

    
    
                                            
                 Datasheet/Specs
                
                                                    
                 Clock Generation and Distribution
                
                                                    
                 Clock Distribution Devices
                
                                                    
                 ad9508