White Paper: Crystal Oscillator Design Considerations

The frequency accuracy of a nRF design relies solely on the accuracy of the crystal frequency. It is essential to follow the crystal accuracy specification set in each nRF device product specification. The crystal oscillator frequency is not only set by the crystal specification but, the total capacitance the crystal circuitry loads the crystal with must match the specification of the crystal. This article presents the main RF parameters affected by the crystal oscillator accuracy, how to measure crystal oscillator accuracy, and how to correctly design the crystal circuitry of nRF devices.

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