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oscillation frequency estimate using harmonic balance

Hi,

I am working on a crystal oscillator. I want to estimate frequency pulling over temperature caused by circuit (excluding crystal). I am looking at something around 0.01ppm/C level or less. It takes too much time to use shooting mehod. So I use harmonic balance to figure out oscillation frequency. It gives good resulton 2ppm frequency pulling (matches my hand calculation). But I do not know if 0.01ppm frequency pulling can be simulated by harmonic balance. What parameters do I need to tighten?

The oscillator XIN and XOUT have small sinusoidal swing. Not much harmonics at all.

Thank you in advance!

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Andrew Beckett over 10 years ago

Simulating that level of accuracy is difficult (I'd say it's really difficult with shooting), and harmonic balance is more likely to be better with a crystal oscillator. But I think it would be best to contact customer support so that we can take a look at your setup in more detail.

Kind Regards,

Andrew.
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Andrew Beckett over 10 years ago

Simulating that level of accuracy is difficult (I'd say it's really difficult with shooting), and harmonic balance is more likely to be better with a crystal oscillator. But I think it would be best to contact customer support so that we can take a look at your setup in more detail.

Kind Regards,

Andrew.
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