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ADG467 - what is the minimal bipolar supply voltage ?



		

			

									
					    allein
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 23, 2018 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    

    We aim to protect the ADC inputs using an ADG467. We currently are using +/-3.6V to supply it, targetting to clip the input signals to +/-2.1V.
    

    Initial tests look OK, but I'd like to have a cross-checking from you.
    

    Thanks in advance
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			


				
	









	
      
	

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      •  Analog Employees  
      
            
			                            
                        
                on Oct 23, 2018 5:52 PM
            
            
					
      
	
      

		
		
      
					
      Hi Allein,
      

      For this channel protector we have a minimum bipolar supply range rating of +/-4.5V in Table1.  You going down to +/-3.6V is below this so performance would not be guaranteed. You will see a large variation in Ron versus input voltage when using low supplies, see Figure 6 in the datasheet.  It is difficult to say all the effects at such a low voltage supply. 
      

      Regards,
      Eric.
      

      

      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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