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ADA4000 comparator



		

			

									
					    Jajajib
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Feb 19, 2013 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi AD,
    
 
    is the ADA4000-1 can be used as a comparator instead of amplifier and is it a dedicated op-amp to work for this kind of use (e.g comparator)
    
 
    It seems that ADA4000 is highly sensitive working as a comparator and it doesn't like this non linear mode. 
    
 
    Moreover with a transistor on the output which could create high DV/DT for example.
    
 
    thanks for your help,
    
									
			        
		
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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													0
							
			
				
									
							        
			
			
			
        
            
			                            
                        
                on Mar 7, 2013 2:04 PM
            
            
					
        
	
        

		
		
        
					
        Hi,
        
 
        I would like to extend my issue, not only on using ADA4000 as a comparator but also as an op-amp.
        
 
        I am not sure that my electrical circuit is not the root cause of my problem (I cannot provide with the system circuit) but this ADA4000 op-amp seems to have some troubles (KO) and I would like to check if this op-amp has no internal sensitivity. 
        
 
        What would be the behaviour (or failure mode) of the ADA4000 op-amp with : 
        
 
        - a disymetric power supply or no synchronous power supply when power on
        
 
        - ESD 
        
 
        - bad or far decoupling capacitor on power supply
        
 
        - latch up phenomenae 
        
 
        - any cause which could lead to a failure on the op-amp
        
 
        thanks in advance
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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													0
							
			
				
									
							        
			
			
			
          
            
			                            
                        
                on Mar 7, 2013 2:04 PM
            
            
					
          
	
          

		
		
          
					
          Hi,
          
 
          I would like to extend my issue, not only on using ADA4000 as a comparator but also as an op-amp.
          
 
          I am not sure that my electrical circuit is not the root cause of my problem (I cannot provide with the system circuit) but this ADA4000 op-amp seems to have some troubles (KO) and I would like to check if this op-amp has no internal sensitivity. 
          
 
          What would be the behaviour (or failure mode) of the ADA4000 op-amp with : 
          
 
          - a disymetric power supply or no synchronous power supply when power on
          
 
          - ESD 
          
 
          - bad or far decoupling capacitor on power supply
          
 
          - latch up phenomenae 
          
 
          - any cause which could lead to a failure on the op-amp
          
 
          thanks in advance
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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