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AD9375_PSRR Requirement



		

			

									
					    Deva1998
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 29, 2022 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi Analog Team !
    

    I would like to know the PSRR requirement of the Power pins of AD9375 Transceiver.
    

    I have went though Power Management consideration section present in UG-992 which specifies the Routing method to isolate aggressors, But i need to verify that my buck convertor output ripples meet the PSRR specification of AD9375 to achieve optimum performance.
    

    

    Thanks In-Advance
    

    Deva
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on Feb 9, 2022 12:25 PM
            
            
												
						in reply to Deva1998
					
									
      
	
      

		
		
      
					
      Refer to page 277 in the "POWER MANAGEMENT CONSIDERATIONS" section in UG . The tolerance levels are mentioned below .
      

      1. VDDA_1P3  +/-2.5%
      

      2. VDDA_3P3 +/-5%
      

      3. VDDA_1P8  +/-5%
      

      4. VDIG  +/-2.5%
      

      5. VDDIF +/-5%
      

      6. VDDA_SER +/-5%
      

      As long as ripple is within the tolerance ,VDDA_1P3  +/-2.5% specified in the UG  it should be fine.  .
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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