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HMC3587 output load requirements?



		

			

									
					    keithclark
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Dec 11, 2019 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    

    A quick simple question, can the HMC3587 amplifier chip be run into an open circuit at room temperature when operated at +5v and normal operating currents? From a dissipation point of view this seems OK  but wonder if there are other considerations? I'm just wondering if I need to protect a module where someone could inadvertently forget to connect up an external load
    

    

    Many thanks
    

    

    Keith
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on Dec 19, 2019 4:49 PM
            
            
					
      
	
      

		
		
      
					
      Hi Keith, this part has not been load pull tested so we cannot definitively say that it will survive. Worst case would be where the output power would be at saturation (15 to 17 dBm). That is not a huge amount of power reflecting back into the output.  So my guess is that it would be ok but unfortunately, I can't say that definitively.
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Dec 19, 2019 4:49 PM
            
            
					
      
	
      

		
		
      
					
      Hi Keith, this part has not been load pull tested so we cannot definitively say that it will survive. Worst case would be where the output power would be at saturation (15 to 17 dBm). That is not a huge amount of power reflecting back into the output.  So my guess is that it would be ok but unfortunately, I can't say that definitively.
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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