issue that generate arbitrary waveforms

Question

Hi ADI expert 
 I am planning to generate 3 arbitrary signals of 100kHz. T he AD9106 has 4 channels , can I generate 3 independent arbitrary waveforms of 100kHz. 
 Thanks in advance!

AlexAtienza · Accepted Answer

Yes, you are correct. Each data point corresponds to one of the 4096 memory locations within the SRAM.)

AlexAtienza · Answer

Hi hudianshequ , 
 Please see below: 
 hudianshequ said: 1. Is the maximum output current of IOUTn 8mA? I t could be converted to a voltage signal by a pull - down resistor, Is there a maximum limit for the pull-down resistor ? 
 
 Yes, 8mA is the maximum Full-Scale output current for VDD = 3.3V. Please refer to table 1 of AD9106 datasheet. 
 For pull down/load resistor, consider the output current specifications and the voltage range to ensure proper operation. You can refer also to tutorial MT-019 , for DAC analog output considerations. It will depend on your desired signal characteristics. 
 
 hudianshequ said: In datasheet, figure36 to figure39, LVDS driver is used. T he evaluation board schematic i n AD9106-ARDZ-EBZ, crystal oscillator is used for input clock, not using LVDS driver. The input clock of the ad9106 is only crystal oscillator? 
 
 For AD9106-ARDZ-EBZ evaluation board, it also allows for external clocking options if a different frequency is required. You can connect external signal source at J10 port. For convenience of evaluation, default clock source was placed to eliminates the need for an external high-frequency clock generator, making the board easier to use.

AlexAtienza · Answer

Hi hudianshequ , 
 Thank you for using AD9106. 
 Yes, the AD9106 has four channels, so you should be able to generate three independent arbitrary waveforms of 100kHz. The device features on-chip pattern memory and a direct digital synthesizer (DDS), which allows for complex waveform generation. You can configure the waveform generator using SPI registers and load patterns into the SRAM. 
 You can refer on AD9106/AD9102 Low-Power DAC and Waveform Generator FAQs Q4 & Q10 for more details. 
 Please consider Q7 if you plan to use the SRAM of AD9106. 
 
 Thanks and kind regards, 
 Alex

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issue that generate arbitrary waveforms

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