Products Mentioned

ADM2587E Production
The ADM2582E / ADM2587E are fully integrated signal and power isolated data transceivers with ±15 kV ESD protection and are suitable for high speed communication...
Datasheet
ADM2587E on Analog.com

  • State Verified Answer
  • +1 person also asked this people also asked this
  • Replies 1 reply
  • Subscribers 33 subscribers
  • Views 1047 views
  • Users 0 members are here
Options
Related 

        

            Post
             Go back to editing
        

    

    


    

    









		












	
	
			
	
			
		
	
	
		

		
ADM2587E GND2 Pin Connections



		

			

									
					    SpencerF
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jul 7, 2022 
				
			
			
		
    

				
		
    
		    		    
		    
		    		      		            		        
    Category: Datasheet/Specs
    
    		        		            		    
    Product Number:  ADM2587E 
    
    		        		    		    	
			
    The ADM2587E data sheet says to not connect Pin 16 to Pin 11 and Pin 14 for GND2, but later in the data sheet, it says to connect Pin 16 to Pin 11 on the outside of the L2 ferrite. I would just like confirmation that Pin 16 and Pin 20 are connected to Pin 11 and Pin 14 through the ferrite bead L2.
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 Datasheet/Specs
                
                                                    
                 Digital Isolation Technology
                
                                                    
                 Isolated RS-485
                
                                                    
                 adm2587e
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

    • 
	
      



	
			
		
	



      
	
      
		
      
							
					
      
		
      
			
													+1
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jul 7, 2022 11:00 AM
            
            
					
      
	
      

		
		
      
					
      Yes, pin 16 and pin 20 should connect to the bus-side PCB ground, and L2 also connects to that same PCB ground (pin 16 and pin 20) with Pin 11 and pin 14 only connected to each other and the other side of L2. The intention is to filter any iso DC-DC noise on Pins 11 & 14 before connection to PCB ground and pins 16 & 20 used for RS-485/Data isolator.
      

      Best regards,
      

      Conal
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

      •