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180MHz clock generator
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DanioIO
Contributor
Posts: 35
180MHz clock generator
«
on:
March 28, 2014, 04:32:39 pm »
Hi,
I'm looking for 180MHz clock for my DDS project, i didnt find any crystal oscillators at that frequency so how is it generated?
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woodchips
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Re: 180MHz clock generator
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Reply #1 on:
March 28, 2014, 06:53:20 pm »
Overtones. Use a 20MHz oscillator (or whatever) and a 180MHz filter.
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Alexei.Polkhanov
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Re: 180MHz clock generator
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Reply #2 on:
March 28, 2014, 08:34:09 pm »
Is your DDS project based on FPGA? like maybe Cyclone III or Spartan? You can configure internal PLL to generate clock signal that you need up to ~300 MHz usually. If not look at DDS IC from Analog Devices AD9851 - that one is probably exactly what you need.
http://www.analog.com/en/rfif-components/direct-digital-synthesis-dds/ad9851/products/product.html
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180MHz clock generator
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