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ADA4857 pspice Model

		
	
				

			

									
					    JohnTempe
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 23, 2012 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
     I am trying to use the ADA4857 to generate a circuit model of a state variable filter in order to compare with measured results.  In our implementation, we are using a single supply (+5V/0) on the ADA4857.  When using the pspice model of the ADA4857 in Microwave Office, the pspice model does not work with a negative supply the is greater than -0.9V.  Is there something in the pspice model that I can change that will allow the pspice model to work with the negative supply grounded?
    
 
    Thanks,
    
 
    John Estes