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ADL5205 Recommended for New Designs
The ADL5205 is a digitally controlled, wide bandwidth, variable gain dual amplifier (DGA) that provides precise gain control, high output third-order intercept...
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ADL5205 on Analog.com

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ADL5205 chain

		
	
				

			

									
					    roberto@crc
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jul 25, 2024 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquired about DC coupling and cascading two stages of the ADL5205 to achieve a wider programmable gain, seeking advice to avoid saturation. The support engineer offered to review the user's schematic/layout for feedback, as no specific app note exists for this configuration. The user provided a schematic and requested further suggestions.
                        	    
    
                
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    Hello,
    
 
    i'm going to use a single ADL5205 where the two stages will be connected (DC coupled) in a serial way in order to have more wide programmable gain. For sure i've to take care of level in the middle avoiding saturation.
    Is there any app note that describe this kind of connection and/or there are any reason that makes it not feasible ?
    Tks in advance
    Br
    
 
     Roberto
    
			
    
			
									
		                                 
    Thread Notes  
    
                
    
        
                                        
                        

    
    
                                            
                 amplifiers
                
                                                    
                 adl5205
                
                                                    
                 Digital Control VGAs
                
                                                    
                 Variable Gain Amplifiers (VGA)