Crystal Oscillator design and VCO design

Thread Starter

Bonga

Joined Feb 24, 2014
1
Hi ,

1.I want to design a Colpitts crystal oscillator , with a square wave output.

2.I want to design a Voltage Controlled Oscillator (colpittes type , that generates a square wave output.

Reason , I am trying to design a Phase Locked Loop , that will give a stable frequency output of 4MHz.
But I need a crystal oscillator as a reference to my PLL and a VCO as part of the PLL circuit.

any suggestions , please.

Bonga
 
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