CDCM7005: (5962-0723001VXC) dynamic capacitance

Hello, 

From the CDCM7005 datasheet, the input capacitance at the PRI_REF and SEC_REF pins is typically around 2.7pF, and for the VCXO_IN pins it's around 1.5pF. Let me know if this is what you're looking for. 

Regards, 

Connor 

Hi Connor,

In case you are able to provide a bit more information, Cpd is the parasitic capacitance of a device, usually defined by channel or by total device. We're lacking the internal/parasitic capacitances for this device to calculate the dynamic power, so we wanted to see if this is a value you spec for this part.

Thanks for the help

Hi, 

Unfortunately we don't usually spec dynamic capacitance for our clocking devices. Just to confirm, are you looking for the dynamic capacitance on the input or output of the device? Besides the typical input/output capacitance values listed on the datasheet, internal capacitance for each pin and parasitic capacitance from the package is provided in the IBIS model under the "Design tools and simulation" tab on the product page: https://www.ti.com/product/CDCM7005#design-tools-simulation 

Figures 1-4 in the datasheet may also helpful to estimate the power consumption with different output configurations and frequencies. 

Regards, 

Connor 

Thank you for the help so far. We're actually looking for the total internal parasitic capacitance of the device itself. We have everything we need to calculate the dynamic current for the loads. Just to confirm -- you don't have the total dynamic capacitance for the device CDCM7005?