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REF43 Not Recommended for New Designs
The REF43 is a low-power precision reference providing a stable +2.5V output independent of variations in supply voltage, load conditions or ambient temperature...
Datasheet
REF43 on Analog.com

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REF43 pin configuration

		
	
				

			

									
					    jiamin
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 7, 2019 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    Hi there,
    

    I would like to know for the part REF43, pin 1 and pin 4 are they suppose to be shorted?
    

    Found that pin1 and pin4 are shorted when tested using multi-meter.
    

    

    Thanks& Best Regards,
    

    Carmen.
    
			
    
			
									
		                             
                        

    
    
                                            
                 Series Voltage References
                
                                                    
                 voltage references
                
                                                    
                 ref43