Products Mentioned

ADF4382A Recommended for New Designs
The ADF4382A is a high performance, ultralow jitter, fractional-N phased-locked loop (PLL) with an integrated voltage controlled oscillator (VCO) ideally...
Datasheet
ADF4382A on Analog.com

Associated Drivers

Thread Details

  • State Verified Answer
  • +1 person also asked this people also asked this
  • Replies 1 reply
  • Subscribers 71 subscribers
  • Views 790 views
  • Users 0 members are here
 
Related Content

        

            Post
             Go back to editing
        

    

    


    

    









		


















	
	
			
	
			
		
	
	
		

	    
	    
	    		
ADF4382A Multiple Frequency Simulation

		
	
				

			

									
					    jamesf
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Feb 3, 2026 
				
			
			
		

		
		                    	    

        	    
Thread Summary

                The user encountered an error simulating equally spaced output frequencies from 5-10GHz in ADIsimPLL for the ADF4382A. The issue arises because the ADF4382A's fundamental VCO range is 11.5-21GHz, and the output dividers (2 and 4) create gaps in the 5-10GHz range. The full ADF4382 version will cover 11-22GHz, resolving these gaps.
                        	    

                
                     AI Generated Content
                
    	    

             
				
        		

		    
		    		    

		      		            		        
Category: Software

    		        		            		    
Product Number:  ADF4382A  

    		        		        		        
Software Version: ADIsimPLL 5.7

    		    		    

		    		    
		    			

			    
Hi,




I am trying to simulate the ADF4382A in ADIsimPLL. I would like to simulate equally spaced output frequencies from 5-10GHz, but I get an error saying the VCO is out of range, even though the VCO can output this frequency range, by using an output divider.


If I tell the software I would like to simulate just one output frequency at 5GHz, no error occurs.




Is this a bug? Or is there a limitation on the VCO that I don't understand?




Many Thanks,


James

			

			
									
		                                 
Thread Notes  

                

        
                                        
                        

    

                                            
                 Phase-Locked Loop (PLL) Synthesizers
                
                                                    
                 software
                
                                                    
                 ADF4382A
                
                                                    
                 ADIsimPLL 5.7
                
                                                    
                 rf and microwave
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                                                    
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			


				
	









	
    
	

  • 
	
    



	
			
		
	



    
	
    
		
    
							
					
    
		
    
		    
		    		    
			
				
									
							        
			
			
			
    •  Analog Employees  
    
            
						
                            
            
            				
            
                on May 3, 2024 12:43 PM
            
            
						
			            		
    
		
										+1
					
	
    

		
		
    
		
    
                                
                                                            
    
					
    Hi,

    This is happening because ADF4382A variant covers a fundamental range between 11.5GHz and 21GHz, and supports output divider only 2, and 4. This leaves some gaps in the entire frequency range ( between 5.25GHz - 5.75GHz and 10.5GHz - 11.5GHz) which are not supported. Sadly, your settings fall within this range. Although the full ADF4382 version which will be out at a later date (end of summer) will cover the entire frequency range (11GHz - 22GHz). 
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
				
				
				
		
		
    
			
		
    
	
    

    

    •