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Can programmable silicon oscillators do the following?
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Jayson



Joined: 08 Oct 2001
Posts: 460
Helped: 17
Location: Brazil
Post05 Mar 2004 17:24   

Can programmable silicon oscillators do the following?
Does anyone have any experience with programmable silicon oscillators such as the Linear LTC6903? I am wondering can these be used for generating pixel clock frequencies for a CRT display controller?

- Jayson
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llrry



Joined: 02 Mar 2004
Posts: 25
Post05 Mar 2004 17:54   
I think you'd better design a pll instead of using programmable oscillators.
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Jayson



Joined: 08 Oct 2001
Posts: 460
Helped: 17
Location: Brazil
Post06 Mar 2004 4:00   

Re: Can programmable silicon oscillators do the following?
Is there any particular reason why? I can get very close frequencies to those that I want and a small shift in the picutre on the CRT would not bother me that much.

- Jayson
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Jayson



Joined: 08 Oct 2001
Posts: 460
Helped: 17
Location: Brazil
Post20 Apr 2004 3:12   

Re: Can programmable silicon oscillators do the following?
Does anyone know if a DDS chip with a sign bit output used as a clock can provide reasonable jitter allowing it to be used in place of a programmable PLL?

- Jayson
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Beetroots



Joined: 12 Dec 2001
Posts: 159
Helped: 2
Post20 Apr 2004 20:42   

Re: Can programmable silicon oscillators do the following?
Have used several ICS programmable PLL IC's in the past with no problems. Check out their website.
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Jayson



Joined: 08 Oct 2001
Posts: 460
Helped: 17
Location: Brazil
Post20 Apr 2004 22:52   

Re: Can programmable silicon oscillators do the following?
Can a DDS (i.e., AD9834) be used instead for generating the pixel clock for SVGA? I've never worked with a DDS and that is why I am asking.

- Jayson
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Beetroots



Joined: 12 Dec 2001
Posts: 159
Helped: 2
Post21 Apr 2004 1:21   

Re: Can programmable silicon oscillators do the following?
Yes, you should be able to use a DDS IC for this.
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