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HMC1119 Recommended for New Designs
The HMC1119 is a broadband, highly accurate, 7-bit digital attenuator, operating from 0.1 GHz to 6.0 GHz with 31.5 dB attenuation control range in 0.25...
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HMC1119 on Analog.com

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As for Safe-State Transiton of HMC1119 (2)

		
	
				

			

									
					    AkiraO
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 23, 2025 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquired about the HMC1119 DSA's safe-state transitions, specifically whether it reaches the maximum attenuation state and the duration of any glitches. The final answer clarifies that the attenuator switches to its maximum attenuation state before stabilizing, and the typical rise and fall times (tRISE, tFALL) are 60ns.
                        	    
    
                
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    Category: Hardware
    
    		        		            		    
    Product Number:  HMC1119  
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi,
    

    Thank you for you reply. Could you nplease answer additional question?
    

    According to followings,
    

      (+) Transitions in Digital Step Attenuators (DSA): Glitch-Free, Safe-State, No-Protection - Documents - RF and Microwave - EngineerZone
    

    during safe-state transitions, the attenuator switches to its maximum attenuation state before stabilizing to the desired attenuation state. Does this mean that it never actually reaches the maximum attenuation state?
    

    The data sheet says tRISE, tFALL: 60ns typ. What is the maximum duration during which the glitch occurs?
    

    Best Regards,
    

    Akira
    
			
    
			
									
		                             
                        

    
    
                                            
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