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ADF4372 3.3V Operation



		

			

									
						mroman
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Feb 27, 2022 
				
			
			
		


				
		

		    		    
		    
		    	
			
I have two questions:


1. What voltage is VCC_REG_OUT?


2. What changes to the circuit need to be made to change from VCC_VCO=5V to VCC_VCO=3.3V operation?




Thanks,


Michael

								


				
				
		

			
						
									
									
						
						
			
			
			
			
		


					

			





	










	

	

					



			


				
	









	
    
	

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                                 Analog Employees 
                                
                            
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                on Feb 28, 2022 4:52 PM
            
            
					
    
	
    

		
		
    
					
    Hi Michael,
    

    We recommend using an external LDO for 3.3V operation too. For this reason, VCC_REG_OUT should be left open. All needed is connecting 3.3V supply to VCC_VCO and VCC_LDO pins for hardware side. The ALC settings should be set for 3.3V operation when programming the part.
    

    Regards,
    

    Kazim 
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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