FAQ
I have two AD9858 feeded by one REFCLK. Both FUDs is synchronized with REFCLK. But Synclk's have different phase shift each power-up. And the output signals too.
Are there any ways to synchronize multiple AD9858 output signals as it shown in aplication…
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Here my output frequency range 140 to 200MHz, and my Clock to DDS is 950Mhz , Can i know how i can calculate the DFTW,DFRRW, ,I have gone through the AD9858 datasheet in pg:18 they given calculations but i am confused…
Is a voltage present on the DACISET pin of the AD9858? How much? What is the simplified interfacing schematic inside the chip?
最近做DDS,使用AD9858芯片,一开始, 上电后有输出,写入程序后输出就没了,芯片一直发热。
后来, 上电后无输出,写程序后也无输出,芯片不升温。
更换芯片,上电后无输出,写程序后也无输出,芯片不升温。
请教各位老师有没有遇到过这种问题,硬件检查过,没问题,软件也没什么问题。不知道错在哪。现在芯片是否已经损坏?