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HMC346 Obsolete
The HMC346 devices are absorptive, voltage variable attenuators (VVAs) operating from dc to 8 GHz, 14 GHz, 18 GHz, or 20 GHz. They feature on-chip reference...
Datasheet
HMC346 on Analog.com

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HMC346 RF connection to DC ground

		
	
				

			

									
					    mj57
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Feb 3, 2015 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    

    Does anyone know if there is a problem with DC grounding the RF pins of the HMC346 VVA?  Do I need a DC block?
    
			
    
			
									
		                             
                        

    
    
                                            
                 Voltage Variable Attenuators
                
                                                    
                 hmc346
                
                                                    
                 attenuators
                
                                
            
    
    
    
		
    

				
				        
        		
    
			
						
									
												
			
			
                        
                                    
                        
                                                    
                        
            
			            
						
						
			
			
			
			
		
    

        
        
        
    
					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

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							FormerMember
					
      
		
      
		    
		    		    
			
				
									FormerMember
							        
			
			
			
    
            
						
                            
            
            				
            
                on Feb 4, 2015 3:36 AM
            
            
						
			            		
    
		
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    Hi mj57,
    
 
    RF ports of the HMC346 are DC coupled with 0V. They do not require DC blocking capacitors if the RF line potential is 0Vdc.
    
 
    Regards
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
				
				
				
		
		
    
			
		
    
	
    

    


	

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                on Aug 2, 2018 10:54 AM
            
            
						
			            		
      
		
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      This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

      Thank you,
      EZ Admin
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
				
				
				
		
		
      
			
		
      
	
      

      

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