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ADuM4121 Production
The ADuM4121/ADuM4121-1 are 2 A isolated, single-channel drivers that employ Analog Devices, Inc.’s iCoupler® technology to provide precision isolation...
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ADuM4121 on Analog.com

ADM4168E Production
The ADM4168E is a dual RS-422 transceiver suitable for high speed communication on point to point and multidrop transmission lines. The ADM4168E is designed...
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ADM4168E on Analog.com

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ADUM4121. PWM connection. Can a LVDS be connect directly to Vi+ and Vi- (by using the twisted pair) without a receiver?

		
	
				

			

									
					    PabloGuicharrousse
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Jul 14, 2023 
				
			
			
		

		
		                     
				
        		

		    
		    		    

		      		            		        
Category: Hardware

    		        		            		    
Product Number:  ADUM4121 

    		        		    		    

		    		    
		    			

			    
I'm using an ADUM4121 as a gate driver for a SiC MOSFET device.

I have seen two examples of how to use the VI+ and VI- pins for the PWM.


1.- Connecting the VI- pin to the ground and applying the logic to the VI+.


2.- Not connecting VI- to the ground and to applying complementary pulses to VI+ and VI-.


I was exploring a third option.


3.- Does the pin VI+ and VI- work as a differential input? I was thinking of using a differential line voltage driver connected to the PWM source in order to use longer twisted pair cables and the other end (twisted pair to VI+ and VI- respectively), and wondering if I could connect this twisted pair directly to VI+ (one cable) and to VI-(the other cable) as if working as a differential input.


This alternative could help me to save a receiver for the line voltage differential driver.

Is it possible to make this type of connection? Do the VI+ and VI- work as differential input? 

Thank you!

			

			
									
		                             
                        

    

                                            
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                 Digital Isolation Technology
                
                                                    
                 Isolated Gate Drivers
                
                                                    
                 ADuM4121
                
                                                    
                 adm4168e
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			


			
	













	
			








	






































     



















		        
        

            
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