Products Mentioned

OP482 Production
The OP282/OP482 dual and quad operational amplifiers feature excellent speed at exceptionally low supply currents. Slew rate exceeds 7 V/µs with supply...
Datasheet
OP482 on Analog.com

Thread Details

  • State Verified Answer
  • Replies 2 replies
  • Subscribers 35 subscribers
  • Views 406 views
  • Users 0 members are here
Options
 
Related Content

        

            Post
             Go back to editing
        

    

    


    

    









		


















	
	
			
	
			
		
	
	
		

	    
	    
	    		
Common mode input range for lower voltages

		
	
				

			

									
					    AjejeBrazof
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Jul 29, 2025 
				
			
			
		

		
		                    	    

        	    
Thread Summary

                The user inquired about the common-mode input voltage (Vcm) range for the OP282/OP482 when supplied with ±4.5V and 12V/0V. The support engineer confirmed that the Vcm range is from -0.5V to 4.5V for ±4.5V supplies and from 4V to 12V for 12V/0V supplies, with a fixed 4V input voltage foot room and 0V head room. The user clarified that the 4V foot room is a hard limit and does not scale with supply voltage.
                        	    

                
                     AI Generated Content
                
    	    

             
				
        		

		    
		    		    

		      		            		        
Category: Datasheet/Specs

    		        		            		    
Product Number:  OP482  

    		        		    		    

		    		    
		    			

			    
Hi there,


by looking at the OP282/OP482 datasheet, I take the Vcm is -11V when the IC is supplied with +-15V. 
My questions is what is the limit when the part is supplied with a lower voltage - for example with +-4.5V (the PSRR is tested with that supply range). Or, as in my case, when the part is supplied between 12V and 0V.



Is the Vcm 4V higher than the lowest supply or it scales down proportionally with lower supply voltages?




Regards


Ajeje

			

			
									
		                             
                        

    

                                            
                 Operational Amplifiers (Op Amps)
                
                                                    
                 Datasheet/Specs
                
                                                    
                 Common mode Voltage range
                
                                                    
                 OP482
                
                                                    
                 Low Input Bias Current Op Amps (≤100 pA)