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HMC836 Obsolete
The HMC836LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) with an Integrated Voltage Controlled Oscillator (VCO). The PLL consists of...
Datasheet
HMC836 on Analog.com

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The Output of HMC836 Drop 7dBM After 2-3 Years Intermittent Working.

		
	
				

			

									
					    IHPGY
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Feb 21, 2022 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user experiences a significant drop in output power from the HMC836 Local Oscillator from 2dBm to -5dBm over a few years. The final answer suggests checking if the absolute max ratings or ESD limits were exceeded, and recommends contacting the local sales channel for return options. No specific URLs or additional clarifications are included.
                        	    
    
                
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    Hi, once I use HMC836 as a Local oscillator output 3.6GHz. The circuit schematic is designed following the evaluation board. There is no problem in the previous two years, and the output power is about 2dBm. After a few years, they are generally reduced to -5dBm. The output power requirements can't reached, and the overall circuit failure appears.
    

    

    Do you have received any feedback in this regard. Do you have any repair measures besides replacing a new HMC836 chip? Thank you!
    
			
    
			
									
		                             
                        

    
    
                                            
                 rf & microwave
                
                                                    
                 hmc836
                
                                                    
                 Fractional-N PLL
                
                                                    
                 Phase Locked Loop (PLL) Synthesizer & Translation Loop