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LT5538 Production
The LT5538 is a 40MHz to 3800MHz monolithic logarithmic RF power detector, capable of measuring RF signals over a wide dynamic range, from –75dBm to...
Datasheet
LT5538 on Analog.com

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Supply Voltage Level

		
	
				

			

									
					    Alexandros91
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Jul 24, 2025 
				
			
			
		

		
		                    	    

        	    
Thread Summary

                The user inquired about the LT5538's performance at 3.3V supply voltage, given that the datasheet only provides electrical specifications for 5V. The support engineer confirmed that performance at 3.3V is very similar to 5V, with comparable temperature stability, based on the datasheet's plots comparing 3V and 5V operation.
                        	    

                
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Category: Hardware

    		        		            		    
Product Number:  LT5538  

    		        		    		    

		    		    
		    			

			    
In the LT5538 datasheet the electrical specifications are given only for 5V supply voltage. The chip is specified to work from 3V to 5.5V. I want to use 3.3V voltage supply. Are the characteristic curves the same? 

			

			
									
		                             
                        

    

                                            
                 hardware
                
                                                    
                 RF Power Detectors
                
                                                    
                 Logarithmic Detectors
                
                                                    
                 lt5538