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Does AD9833 need an amplification circuit?

		
	
				

			

									
					    goodman68
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 27, 2023 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquires about the necessity of an amplifying circuit for generating a 0V to 5V square wave signal for a test chip. The final answer clarifies that the AD5441 is not a waveform generator but a multiplying DAC that can scale the output of the AD9833. An amplifier is recommended due to the limited driving capability of the digital output, and the AD5451 can be used to scale the VOUT signal, though it may limit the rise time of the square wave.
                        	    
    
                
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    Category: Hardware
    
    		        		            		    
    Product Number:  AD9833 
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi- Everybody
    

    I design semiconductor test equipment.
    

    Therefore, a square wave signal from 0V to 5V must be input to the test chip.

    

    As shown below,
    

     
    

    

    So, do we have to put an amplifying circuit on this chip separately?
    

    Because I saw the following article on the Internet:
    

    " Square wave is reasonably clean/usable up to about 1Mhz. SIN wave is nice and clean up to the max frequency of 12.5Mhz, but the amplitude drops significantly above 1Mhz. This could probably be improved with an opamp with higher gain."
    

    

    Thanks!
    
			
    
			
									
		                             
                        

    
    
                                            
                 hardware
                
                                                    
                 amplification
                
                                                    
                 clock and timing
                
                                                    
                 ad9833
                
                                                    
                 ad5451
                
                                        
                                            
                
                
                                        
                                            
                
                
                                        
                                            
                
                
                                        
                                            
                
                
                                
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