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LT1236 Production
The LT1236 is a precision reference that combines ultralow drift and noise with excellent long-term stability and high output accuracy. The reference output...
Datasheet
LT1236 on Analog.com

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LT1236A precision ref trimming



		

			

									
					    Flh
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 28, 2021 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hello, I'm confused with the datasheet for trimming the 10V "A" version of LT1236. In writing on page 7 it says I need a 75k resistor in series with a 20k pot, but the circuit diagram on page 8 instead uses a 50k pot. Is this diagram correct?Which trimpot value is recommended?
    

    Also, when it says that by adding this trimpot, "Effect on the output TC will be only 1ppm/°C...". Is this drift in addition to the non-trimmed 2ppm/°C (typical) spec, or instead of? 
    

    Thanks!
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 Series Voltage References
                
                                                    
                 LT1236
                
                                                    
                 voltage references
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			


				
	









	
      
	

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							FormerMember
					
      
		
      
			
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									FormerMember
							        
			
			
			
    
            
			                            
                                                                                                                        
            
				
			
            
					
    
	
    

		
		
    
					
    Moving this to the correct forum for support.
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    


	

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													+1
							
			
				
									
							        
			
			
			
    •  Analog Employees  
    
            
			                            
                                                                                                                        
            
				
			
            
					
    
	
    

		
		
    
					
    Hi Campbell,
    

    

    In regards to the trimpot, i'll confirm first which is the right value. I'll get back to you as soon as I have the answer.
    

    For the TC, yes this should be on top of the 2ppm/degC.
    

    

    Regards,
    

    Mon
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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