Microchip Technology AN826
The first step is to determine the frequency of operation which is typically one of s everal standard v alues that c an be selected from a catalog, distributor, or crystal manufacturer. The s econd step is to sa mple o r purchase th e crystal and evaluate it in the product design.| Part No. | AN826 |
|---|---|
| Datasheet | AN826 Download |
| Manufacturer |  Microchip Technology |
| Description | Crystal Oscillator Basics and Crystal Selection |
| Buy | Stock & Price |
AN826 Crystal Oscillator Basics and Crystal Selection for rfPICTM and PICmicro® Devices Author: Steven Bible Microchip Technology Inc.
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● What temperature stability is needed? What temperature range will be required? Which enclosure (holder) do you desire? What load capacitance (CL) do you require? What shunt capacitance (C0) do you require? Is pullability required? What motional capacitance (C1) do you require? What Equivalent Series Resistance (ESR) is required?
● What drive level is required? To the uninitiated, these are overwhelming questions. What effect do these specifications have on the operation of the oscillator? What do they mean? It becomes apparent to the product design engineer that the only way to answer these questions is to understand how an oscillator works. This Application Note will not make you into an oscillator designer. It will on ly exp lain th e ope ration of an oscillator in simplified terms in an effort to convey the concepts that make an oscillator work.
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● What temperature stability is needed? What temperature range will be required? Which enclosure (holder) do you desire? What load capacitance (CL) do you require? What shunt capacitance (C0) do you require? Is pullability required? What motional capacitance (C1) do you require? What Equivalent Series Resistance (ESR) is required?
● What drive level is required? To the uninitiated, these are overwhelming questions. What effect do these specifications have on the operation of the oscillator? What do they mean? It becomes apparent to the product design engineer that the only way to answer these questions is to understand how an oscillator works. This Application Note will not make you into an oscillator designer. It will on ly exp lain th e ope ration of an oscillator in simplified terms in an effort to convey the concepts that make an oscillator work.
