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Active filter using OP496



		

			

									
						rejeeshsraj
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Sep 20, 2012 
				
			
			
		


				
		

		    		    
		    
		    	
			
Hi All,

 
I designed a butter-worth 4th order filter with Fc = 3.5KHz,

 
I wish to use the part OP496GS. 

 
For verification of the design I acquired the psice model of the part OP196.

 
I am using Multisim 10.1 for simulation of my circuit.

 
When I am doing the AC analysis I am getting error. (Error is "Iteration limit reached"). 

 
Whereas my design meets all the criteria when I replaced the model with ADA4857.

 
I am getting the same error if I am using the OP496 model from Multisim's library.

 
Please let me know is it the problem with Model of OP196 or it is the problem with device?

 
I am attaching the screen shot of my circuit for your refernce.

 
Expecting your comments as I am about to start the layout using this part.