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SSM2019 balanced mic preamp - single power supply?



		

			

									
					    ekoester
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Aug 14, 2012 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Can th SSM2019 be run from a single DC power supply, rather than provide a +V and -V?
    
 
    I'm planning a balanced microphone amplifier circuit and thinking towards an SSM2019.
    
 
    Thanks,
    
 
    Eric
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on Aug 14, 2012 7:46 PM
            
            
					
      
	
      

		
		
      
					
      Hi Eric,
      
 
      You can run the SSM2019 from a single-sided DC supply, as you would any op amp. You will need to provide a +V/2 (half rail) reference for the REFERENCE pin on the part; this reference should be well filtered with both bulk and bypass capacitors. You will also need to provide appropriate AC coupling for the input and output, as each pin will be charged with the reference voltage.
      
 
      Best regards,
      
 
      Coleman
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
			                            
                        
                on Aug 14, 2012 7:46 PM
            
            
					
      
	
      

		
		
      
					
      Hi Eric,
      
 
      You can run the SSM2019 from a single-sided DC supply, as you would any op amp. You will need to provide a +V/2 (half rail) reference for the REFERENCE pin on the part; this reference should be well filtered with both bulk and bypass capacitors. You will also need to provide appropriate AC coupling for the input and output, as each pin will be charged with the reference voltage.
      
 
      Best regards,
      
 
      Coleman
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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