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ADUM1410 Production
The ADuM1410 / ADuM1411 / ADuM1412 are four-channel digital isolators based on Analog Devices, Inc. iCoupler® technology. Combining high speed CMOS and...
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ADUM1410 on Analog.com

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Data output during disable transition

		
	
				

			

									
					    ADUM1410
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Aug 29, 2024 
				
			
			
		

		
		                     
				
        		

		    
		    		    

		      		            		        
Category: Hardware

    		        		            		    
Product Number:  ADUM1410  

    		        		    		    

		    		    
		    			

			    
Regarding to ADUM1410, we saw unexpected output signal during disable transition low to high.


See below for the condition and let me know it is normal or not.


VDD1, VDD2 : 5V


VIA~VID : 5V


CTRL2 : 5V


When DISABLE is low:0V to high:5V, 3~4uSEC width pulse was come out from VOA~VOD.


 

			

			
									
		                             
                        

    

                                            
                 hardware
                
                                                    
                 Digital Isolation Technology
                
                                                    
                 Standard Digital Isolators
                
                                                    
                 adum1410
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			


				
	









	
    
	

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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Sep 13, 2024 9:59 AM
            
            
						
			            		
    
		
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    HI Kouchi-san,
    

    When the DISABLE pin is driven high, the outputs (VOA-VOD) will transition to the default state a determine by the CTRL2 pin. As you indicated that the control pin is high, VOA to VOD should remain high in this instance. Is this behavior repeatable and observed on every transition of the DISABLE pin? This isolator was release >10 years ago. I will need to order some samples to investigate this issue. Can you provide a schematic and some additional details on the frequency of this glitch?
    

    

    Best Regards,
    

    Ger
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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                on Sep 17, 2024 12:28 AM
            
            
												
						in reply to GerardOBrien
					
										
			            		
    
		
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    Welcome back, Gerard-san.
    

    Let me reply for your questions, below.
    

    The behavior is repeatable and could see everytime with the condition.
    

    Even if we do put no data, the glitch is occurred. So that no matter of logic circuit and application such as frequency.
    

    Please confirm your side if possible at all. 
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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