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ADF7021 Not Recommended for New Designs
The ADF7021 is a low power, highly integrated 2FSK/3FSK/4FSK transceiver. It is designed to operate in the narrowband, license-free ISM bands and licensed...
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ADF7021 on Analog.com

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ADF7021 Daughter board ADF7021DBZ5

		
	
				

			

									
					    RoggerOA
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Feb 3, 2026 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquired about the necessary components to transmit at 144 MHz using the ADF7021DBZ5 daughter board, which comes with a 19.680 MHz XTAL. The final answer from the Analog Devices support team indicated that the question was closed and assumed answered, without specifying the required components. The application note AN-859 provides component details for the 140-150 MHz band, but it uses an 11.0592 MHz XTAL, which differs from the board's 19.680 MHz XTAL.
                        	    
    
                
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    Hi,
    
 
    I have this daughter board (ADF7021DBZ5) which i will stream to 144 MHz, then my question is, which components I need on this board to transmit at the desired frequency?, Since this board does not come with the necessary components to transmit. 
    
 
    
  In the application note AN-859 there are a components of the band 140-150 MHz, but on page 10 is the use of an XTAL of 11.0592 MHZ and ADF7021DBZ5 board comes already connected to 19.680 MHz XTAL.
  
    So my question is: which components they need connect on this card to transmit a 144 MHz to 19,680 MHz XTAL?
    
 
    
			
    
			
									
		                                 
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                 adf7021
                
                                                    
                 Low Power RF Transceivers
                
                                                    
                 RF Integrated Transceivers