Products Mentioned

LT1498 Production
The LT1498/LT1499 are dual/quad, rail-to-rail input and output precision C-Load™ op amps with a 10MHz gain bandwidth product and a 6V/μs slew rate....
Datasheet
LT1498 on Analog.com

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Part Input Impedance

		
	
				

			

									
					    sprl111
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Jun 12, 2024 
				
			
			
		

		
		                     
				
        		

		    
		    		    

		      		            		        
Category: Hardware

    		        		            		    
Product Number:  LT1498 

    		        		    		    

		    		    
		    			

			    
What is the input impedance/resistance of the LT1498?  I'm not seeing it mentioned in the data sheet?

			

			
									
		                             
                        

    

                                            
                 Operational Amplifiers (Op Amps)
                
                                                    
                 hardware
                
                                                    
                 Rail-to-Rail Op Amps
                
                                                    
                 LT1498
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			


				
	









	
    
	

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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Jun 13, 2024 9:24 PM
            
            
						
			            		
    
		
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    Hello  ,
    

    Thanks for reaching out. Upon checking the datasheet, only the input capacitance is there which is 5pF. But we have an LT spice model for LT1498 in which we can simulate the input resistance(common mode). Upon simulating, I got a value of around 475Mohms for the input resistance.
    

    Hope this helps.
    

    

    Best Regards,
    Kenneth
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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