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    how to generate a clock signal

    Hi Guys
    What is the normal way to generate clock signal for ADC? where can I find a complete ADC design circuit where clock signal generation on? I will think to generate clock signal using inverter oscillator and use digital logic to generate other waveform based on this, any suggestions?
    Thanks

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    how to generate clock

    which ADC are you using?
    you can use a 555 ckt or you can give the clk through the controller itself

    here is a link for interfacing ADC 0808 to 8051 controller, the clock is provided by the controller itself
    http://www.dnatechindia.com/index.ph...8-To-8051.html



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    how to generate clock for adc

    Quote Originally Posted by amol_shah
    which ADC are you using?
    you can use a 555 ckt or you can give the clk through the controller itself

    here is a link for interfacing ADC 0808 to 8051 controller, the clock is provided by the controller itself
    http://www.dnatechindia.com/index.ph...8-To-8051.html
    I want to make the clock myself so I can integrated it in one chip? I would like the ADC frequecny up to 10MHZ. Any suggestions?
    Thanks



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    generate clock

    You'd be best off using an external clock generator, even just a simple oscliator.

    Generating clocks can be a noisy business



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    adc clock generation

    We use pll generate the ADC clock usual. There is the PLL in your product system usual. Did you only design a ADC and it is not in some product ?



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    adc and dac interface with 8051 tutorial

    Quote Originally Posted by jerryzhao
    We use pll generate the ADC clock usual. There is the PLL in your product system usual. Did you only design a ADC and it is not in some product ?
    Yes, we do have a PLL in the loop, but the signal I have in PLL is from a inverter oscillator at 2.2GHZ, and the signal I want is a signal at 5-10Mhz and a signal 2.195MHZ, is it possible? should I use digital counter to generate the signal? If possible, could you please decribe it in details?
    Thanks a lot



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    how to generate clock signal for ADC & DAC?

    Let digital engineer help you. you tell them your timing, they will give you the timing that you needed. Do this timing is easy for a digital engineer.



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    Re: how to generate clock signal for ADC & DAC?

    Quote Originally Posted by jerryzhao
    Let digital engineer help you. you tell them your timing, they will give you the timing that you needed. Do this timing is easy for a digital engineer.
    Can you tell me how to do it? I am going to be partly digital guy.
    Thanks



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    how to generate clock signal for ADC & DAC?

    If you are using microcontroller then you can probably connect your ADC/DAC to the SPI interface of MCU if your ADC/DAC can support SPI interface. Alternatively, you can also use polling method with the normal I/Os to generate clock.


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    how to generate clock signal for ADC & DAC?

    Hi Liletian:
    I think you know your ADC&DAC timing clearly. Tell your digital engineer the timing spec, you'd better draw a detail timing diagram for digital engineer. I am not digital engineer, I only tell my request to digital engineer in our design team. the timing of digital part generate by digital synthesis.

    Added after 7 minutes:

    The input of digital block is the PLL's output. I think the digital engineer generate the low speed clock by digital divider.



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