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DAC2900: Can I provide an asymmetric clock to the DAC2900 if I follow the timing specified in the datasheet?

Part Number: DAC2900

Hello, I am looking at using the DAC2900 for an application we have here, and I want to use it in a very specific way, that I believe the timing diagram on page 5 allows my use case but I'd like this confirmed:

I do NOT want to tie the write and clock signals together. I am driving from an FPGA so I have full control of my data and control input signals. What I want to do is latch the data as shown in the timing diagram, then not do the second rising clock edge until a time in the future that I specify, maybe microseconds later. So I will not be providing a symm etric clock or write signal, but I want to use them more as true latch signals. 

The timing diagram does not call out a low pulse width, so I believe that if I follow the tlpw, tcpw, tcw then I will be able to do what I want. Is this true? Can I provide an asymmetric clock signal? 

  • Ed,

    This is an old device and the designers are no longer with TI. The only information we can offer is what is in the data sheet. Other ADC's usually specify the clock duty cycle between 40 and 60%. I would suggest you stay within this range. 

    Regards,

    Jim