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The misbehavior of the spice model of ADG721.cir



		

			

									
						oyz
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on May 23, 2018 
				
			
			
		


				
		

		    		    
		    
		    	
			
I am working on the spice model of ADG721.cir.  The mux control input works as if it is low-active sw. But this is against what the datasheet says: logic 0 means sw off. Please confirm that spice model is corrent or not.

 
Many thanks. jo

								


				
				
		

			
						
									
									
						
						
			
			
			
			
		


					

			





	

		
	











	

	

					



			








	
	
	
	



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                                 Analog Employees 
                                
                            
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                on Jun 19, 2018 6:00 PM
            
            
					
    
	
    

		
		
    
					
    Hi Jo,
    
 
    I'm glad that you have found the ADG442 to better cater your quad input aplication.
    
 
    To verify your observations, I did try to check the model and had a quick simulation. I can confirm you are correct and thank you for bringing this to our attention. I will update both ADG721 and ADG722 spice models for correction.
    
 
    Let me know if there are other concerns.
    
 
    Best Regards,
    
 
    May
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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    • 
                                 Analog Employees 
                                
                            
      • 
                        
     
                                                           			
			                            
                        
                on Jun 19, 2018 6:00 PM
            
            
					
    
	
    

		
		
    
					
    Hi Jo,
    
 
    I'm glad that you have found the ADG442 to better cater your quad input aplication.
    
 
    To verify your observations, I did try to check the model and had a quick simulation. I can confirm you are correct and thank you for bringing this to our attention. I will update both ADG721 and ADG722 spice models for correction.
    
 
    Let me know if there are other concerns.
    
 
    Best Regards,
    
 
    May
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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