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DAC7621 : What is the input capacitance ?

karthik venkatesh
Intellectual 345 points

Other Parts Discussed in Thread: DAC7621

Hi,

I am connecting Spartan 6 FPGA's IOs to DAC7621 inputs in my system.

I am trying to verify whether FPGA IOs can able to drive the DAC inputs.

The DAC7621 datasheet does not mention about input capacitance of IO pins.

I appreciate any help.

Regards,

Karthik

  • 0
    TI__Mastermind 43915 points

    Hi Karthik,

    You looking for a general number or exact? The digital I/O pin capacitance is usually on the order of 4-12 pF in our DACs. Most of the time I have seen that they are around 7pF-ish. If you are looking for exact numbers, an IBIS Model would have to be requested and developed which could take weeks or possibly months depending on the wait time.

    Regards,

    Tony Calabria