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AD620 Production
The AD620 is a low cost, high accuracy instrumentation amplifier that requires only one external resistor to set gains of 1 to 10,000. Furthermore, the...
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AD620 on Analog.com

AD623 Production
The AD623 is an integrated, single- or dual-supply instrumentation amplifier that delivers rail-to-rail output swing using supply voltages from 2.7 V to...
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AD623 on Analog.com

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Information voltage range  AD620

		
	
				

			

									
					    JGuzatti192
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Oct 20, 2021 
				
			
			
		

		
		                     
				
        		

		    
		    		    
		    			

			    
Hi! I have a question about the AD620 Instrument Analog Amplifier. I'm not able to understand how to find in the AD620 data sheet which voltage limit I can apply to the amplifier inputs in differential mode! I'm sending a circuit attached that shows the example I want to apply. nelouso the AD623 but I'm going to apply the AD620. The voltage range coming out of the sensor will be from 1.25 to 2.6 vdc continuous. My concern is if I apply this voltage value to the input I might end up damaging the component. Do I have to put some kind of voltage divider to reduce voltage input on pins+IN and -IN? Grateful for the attention.
Att
Josiah

			

			
									
		                             
                        

    

                                            
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                on Oct 20, 2021 2:34 PM
            
            
						
			            		
    
		
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    Oi! Tenho uma pergunta sobre o Amplificador analógico de instrumento AD620. Não consigo entender como encontrar na folha de dados do AD620 qual limite de tensão posso aplicar às entradas do amplificador no modo diferencial! Estou enviando um circuito anexo que mostra o exemplo que desejo aplicar. nelouso o AD623 mas vou aplicar o AD620. A faixa de tensão que sai do sensor será de 1,25 a 2,6 vdc contínua. Minha preocupação é se eu aplicar esse valor de tensão na entrada, posso acabar danificando o componente. Devo colocar algum tipo de divisor de tensão para reduzir a entrada de tensão nos pinos + IN e -IN? Grato pela atenção. 
    Att 
    Josiah
    

     
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Nov 15, 2021 7:43 PM
            
            
						
			            		
    
		
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    Hi JGuzatti192,
    

    EngineerZone (ez.analog.com) offers support for English language inquiries only. Please post your follow up reply in English so that all members can read it. 
    

    With regards to AD620 input, the input voltage range specification is seen at page 3 of the datasheet.
    

     
    

    AD620 has ESD protection to prevent it from damage. You can add divider resistors before the input pins to limit the current going to the inputs of the amplifier that could cause the damage to the amplifier.
    

    Regards,
    

    Kristine
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
						
						
				
				
		
		
    
			
		
    
	
    

    

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