I am using AD9913 and AD9833 to generate two sine waves.
Can I use a single 25MHz TCXO as input REFCLK for both the DDS chips with just ac coupling...?
The AD9833 needs a CMOS driver for MCLK.
The REF CLK inputs of the AD9913 can be configured a couple ways. It includes dc or ac coupling the REF CLK inputs. Please see page 18 in the data sheet for details.
Thank you very much for your responses.
So, can't i use a Clipped Sine Wave output 25MHz TCXO as MCLK to the AD9833 DDS directly without buffering...?
There is no information as to use a CMOS driver in the datasheet.
Yes, i checked the datasheet of the AD9913.
I am using the two DDS chips in an application. Instead of using two TCXO's (one TCXO driving each DDS), can a single TCXO's output be connected to both the AD9913 REFCLK and AD9833 MCLK parallelly....?
The AD9833 needs a CMOS output clock... this means high slew rates...
I don't know the minimum Mclk slew rate for the part so I cannot confirm if your clock will work...
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