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About error with AD8336 model in LTspice



		

			

									
					    naohisa
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 19, 2021 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    

    I'm simulating with LTspice
    I get a "syntax error" and it doesn't work.
    

    Looking at the following posts, it seems that there is a cause in the model of AD8336, is there a solution?
    

    https://ez.analog.com/amplifiers/f/q-a/14190/problem-with-ad8336-model-in-ltspice
    

    https://ez.analog.com/amplifiers/f/q-a/538758/ad8336-ad8336-model
    

    Even if I add ".options cshunt = 1e-15" here, it doesn't work.
    I'm in trouble!
    

    

    By the way, the circuit I'm trying to run is "Figure 5. AGC Circuit Using the AD8336" here.
    https://www.analog.com/media/en/technical-documentation/application-notes/AN_934.pdf
    

    

     
    

    

    The symbols are made by myself.
    Please let me know if that is the cause too.
    

    Best Regards,
    

    Naohisa
    
									
			        
		
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		






					

			
    
			
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													0
							
			
				
									
							        
			
			
			
        
            
			                            
                        
                on Sep 13, 2022 3:55 AM
            
            
					
        
	
        

		
		
        
					
        Nice to meet you.
        

        I am a japanese student.
        

        I have been running simulations on a similar circuit, but have not been able to get the desired results.
        If you have already succeeded in simulating this circuit, I would be very grateful if you could let me know.
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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													+1
							
			
				
									
							        
			
			
			
        •  Analog Employees  
        
            
			                            
                        
                on Mar 13, 2023 6:29 AM
            
            
												
						in reply to HRKK
					
									
        
	
        

		
		
        
					
        Hi  ,
        

        I attached a sample circuit for the AD8336 applying the netlist edit I mentioned on the thread. I combined it with the .zip file swolpert attached.
        I was able to run it without any error as shown on the screenshot:
        

         
        

        I set it with a gain of 21.45dB, (Setting the preamplifier gain to 12.06dB and applying Vgain of 0.1V).
        I think I got pretty close to the expected output with this one.
        

        Let me know if this helps.
        

        Best Regards,
        Dann
        

        

        AD8336_circuit.zip
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
				
						
						
				
				
		
		
        
			
		
        
	
        

        

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													+1
							
			
				
									
							        
			
			
			
        •  Analog Employees  
        
            
			                            
                        
                on Mar 13, 2023 6:29 AM
            
            
												
						in reply to HRKK
					
									
        
	
        

		
		
        
					
        Hi  ,
        

        I attached a sample circuit for the AD8336 applying the netlist edit I mentioned on the thread. I combined it with the .zip file swolpert attached.
        I was able to run it without any error as shown on the screenshot:
        

         
        

        I set it with a gain of 21.45dB, (Setting the preamplifier gain to 12.06dB and applying Vgain of 0.1V).
        I think I got pretty close to the expected output with this one.
        

        Let me know if this helps.
        

        Best Regards,
        Dann
        

        

        AD8336_circuit.zip
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
				
						
						
				
				
		
		
        
			
		
        
	
        

        

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