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The AD9102 TxDAC and waveform generator is a high performance digital-to-analog converter (DAC) integrating on-chip pattern memory for complex waveform...
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AD9102 on Analog.com

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AD9102 OUTPUT SWEEPING SINE WAVE

		
	
				

			

									
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				                on Jan 20, 2014 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user wants to output a sweeping sine frequency in TTL voltage levels using the AD9102. The final answer suggests using an amplifier to convert the AD9102's current output (up to 8mA, -0.5V to +1.0V compliance) to TTL levels. The SRAM can store tuning words for the on-chip DDS, with a tuning resolution of 10.8Hz at 180MHz CLKP/CLKN. The pattern is repeated at 50Hz, and 10 cycles are needed per frequency point from 20kHz to 30kHz in 1kHz steps.
                        	    
    
                
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    hi.
    
 
    I want to output sweeping sine frequency in TTL voltage levle using AD9102. The datasheet is so vague that i can just output constant voltage.Is there anyone who can help me fix this:
    
 
    Output frequency range: 20kHz to 30kHz, 1kHz step;
    
 
    Number of cycles:10 cycles/frequency point. 
    
 
                                                                                Best regards!
    
			
    
			
									
		                             
                        

    
    
                                            
                 ad9102
                
                                                    
                 clock and timing
                
                                                    
                 Clocks & Timers
                
                                                    
                 Direct Digital Synthesis (DDS)