Products Mentioned

OP279 Production
The OP279 is a dual rail-to-rail, high output current, single supply amplifier. It is designed for low voltage applications that require either current...
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OP279 on Analog.com

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OP279 output current problem?

		
	
				

			

									
					    1053804627
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Sep 29, 2017 
				
			
			
		

		
		                     
				
        		

		    
		    		    
		    			

			    
Hi，

 
    Excuse me, the output current of OP279 is a fixed value?Or does it change with the input voltage?I want to design a circuit ， 0-10v to 0-50ma, what chip should I choose?     Thank you!

			

			
									
		                             
                        

    

                                            
                 Operational Amplifiers (Op Amps)
                
                                                    
                 amplifiers
                
                                                    
                 op279
                
                                                    
                 General Purpose Op Amps
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			


				
	









	
    
	

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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Sep 29, 2017 2:23 AM
            
            
						
			            		
    
		
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    Hi, 
    
 
    No, the output current is not a fixed value. The actual output current of the amplifier will depend on what load you have. On a +/-5V supply, I see a short circuit current limit of +/-50mA though. If you actually need 50mA out, the OP279 would not be a good choice. 
    
 
    What is your application? What will your input source be? What is the bandwidth that you require and do you have limitations on your supplies? Let me know so I can find the best solution for you. 
    
 
    Thanks, 
    
 
    Kris
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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