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#1
March 10th 07, 03:48 PM
posted to rec.radio.amateur.homebrew
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SA602A oscillator
Hi every one!
I'm currently working on a project using SA602A with a 32MHz crystal oscillator. The crystal is specifed with 30 pF load capacitance. I'm not able to make the crytal works. I use 120p and 40p in series, for the crystal.And I follow the circuit given in SA602A data sheet for cellular radio application. Can anybody help me with this one, please..Thanks |
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#2
March 10th 07, 03:53 PM
posted to rec.radio.amateur.homebrew
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SA602A oscillator
On Mar 10, 9:48 am, wrote:
Hi every one! I'm currently working on a project using SA602A with a 32MHz crystal oscillator. The crystal is specifed with 30 pF load capacitance. I'm not able to make the crytal works. I use 120p and 40p in series, for the crystal.And I follow the circuit given in SA602A data sheet for cellular radio application. Can anybody help me with this one, please..Thanks Have you read page 4-3? http://www.standardics.nxp.com/suppo...pdf/an1982.pdf www.telstar-electronics.com |
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#3
March 10th 07, 04:16 PM
posted to rec.radio.amateur.homebrew
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SA602A oscillator
On Mar 10, 11:53 pm, "Telstar Electronics"
wrote: On Mar 10, 9:48 am, wrote: Hi every one! I'm currently working on a project using SA602A with a 32MHz crystal oscillator. The crystal is specifed with 30 pF load capacitance. I'm not able to make the crytal works. I use 120p and 40p in series, for the crystal.And I follow the circuit given in SA602A data sheet for cellular radio application. Can anybody help me with this one, please..Thanks Have you read page 4-3?http://www.standardics.nxp.com/suppo...pdf/an1982.pdf www.telstar-electronics.com Yes I did, but, what about it? i think it does not give much information for components to be used for the oscillator |
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#4
March 10th 07, 04:25 PM
posted to rec.radio.amateur.homebrew
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SA602A oscillator
The SA602 oscillator ir primarily intended for fundamental mode crystals.
Your 32 mhz crystal is probably a 3rd overtone unit. It will probably require a tuned circuit to ensure that it comes up on the third overtone and not on the fundamental frequency. I recall that the Philips app note shows how to do that. Joe W3JDR "Telstar Electronics" wrote in message ps.com... On Mar 10, 9:48 am, wrote: Hi every one! I'm currently working on a project using SA602A with a 32MHz crystal oscillator. The crystal is specifed with 30 pF load capacitance. I'm not able to make the crytal works. I use 120p and 40p in series, for the crystal.And I follow the circuit given in SA602A data sheet for cellular radio application. Can anybody help me with this one, please..Thanks Have you read page 4-3? http://www.standardics.nxp.com/suppo...pdf/an1982.pdf www.telstar-electronics.com |
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Linear Mode
