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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

								


				
				
		

			
						
									
									
						
						
			
			
			
			
		


					

			





	














	

	

					



			


				
	









	
    
	

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                                 Analog Employees 
                                
                            
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                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
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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