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A lot of scalar numbers are specified in ways that may be appropriate for one application but not another.

		
	
				

			

									
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  •  Analog Employees  

			
			
			    	
			                    
                
				                on Nov 9, 2016 
				
			
			
		

		
		                     
				
        		

		    
		    		    
		    			

			    
A lot of scalar numbers are specified in ways that may be appropriate for one application but not another. For example, parts intended for switching usually have timing information rather than GBW or Ft: how I convert to make it useful?

			

			
									
		                             
                        

    

                                            
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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Nov 9, 2016 8:45 PM
            
            
						
			            		
    
		
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    Timing specifications do not typically have a correlation to GBW or Ft.  Timing specs only describe how long it takes the switch to turn on or off, which then relates to the maximum switching frequency.  GBW or Ft would be related more to the capacitance of the switch and its on resistance.   So a switch with a 10pF capacitance and 10ohm Ron would have an Ft of about 1.6GHz, likely a much higher equivalent bandwidth than the switching speed.
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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