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How to design a high accuracy oscillator accross PVT corners?

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Analog_starter

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Can anyone tell me how to design a high accuracy oscillator accross PVT corners without external components or extra trimming pins?
Is that hard to implement?
Thanks a lot!!!

Best Regards
Analog_starter
 

Re: About RC Oscillator

As the integrated components accuracy is bad, you need to get from the outside at least one physical accurate value. You could use a high frequency clock (derived from a xtal oscillator) and divide it to get the required frequency.
 

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