• State Verified Answer
  • +1 person also asked this people also asked this
  • Replies 1 reply
  • Subscribers 34 subscribers
  • Views 285 views
  • Users 0 members are here
Options
Similar Content 

        

            Post
             Go back to editing
        

    

    


    

    









		











	
	
			
	
			
		
	
	
		

		
ADUM14xE operation voltage



		

			

									
						Micha70
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on May 7, 2021 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi everyone,
    

    it's possible to use the ADUM142E and ADUM1251 in mixed powersupply mode?
    

    VDD1 =+3V3 and VDD2=1V8
    

    In the datasheet is always explained the typical voltage range for 5V/3V3 or 1V8
    

    

    thx
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

					
    
			
    


    

	















    
	
    
	
    
					



			


				
	









	
      
	

    • 
	
      



	
			
		
	



      
	
      
		
      
							
					
      
		
      
			
													+1
							
			
				
									
							        
			
			
			
      •    
      
            
			                            
                        
                on May 7, 2021 9:34 AM
            
            
					
      
	
      

		
		
      
					
      Hello Micha,
      

      the ADuM142E and ADuM1251 are  'isolators', hence no connection between VDD1/GND1 towards VDD2/GND2.
      

      As both parts offer signal level translation this scenario demands for mixed power supply levels.
      

      ADuM142 offers 1.8-5,5V VDDx range and ADuM1251 offers 3,0V-5,5V as VDDx range.
      

      The specified parameters are always stated for VDD1=VDD2, to limit the amount of data and reduce test time.
      

      

      kind regards
      

      Markus
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

      •