Crystal Oscillator Capacitor. The pierce oscillator has many desirable characteris tics. The total of these values is represented by cstray.
Essentially the pulling the frequency of a crystal oscillator requires the load capacitance to be changed. Crystal oscillators must be designed to provide a load capacitance. The total of these values is represented by cstray.
The pierce oscillator figure 6 is a series resonant tuned circuit.
This will change the frequency of the oscillation enabling it to be trimmed to the required value within the available range. C1 and c2 are the two capacitors that you see attached to the crystal but you might be wondering what cstray is. It will operate over a large range of frequencies and has very good short term stability. This issues that the gate input is in phase with the gate output.
