High frequency crystal oscillator


Posted on Nov 13, 2012

One section of the MC10101 is connected as a 100 MHz crystal oscillator with the crystal in series with the feedback loop. The LC tank circuit tunes the 100 MHz harmonic of the crystal and may be used to calibrate the circuit to the exact frequency. A second section of the MC10101 buffers the crystal oscillator and gives complementary 100 MHz signals. The frequency doubler consists of two MC10101 gates as phase shifters and two MC1662 NOR gates


High frequency crystal oscillator
Click here to download the full size of the above Circuit.

For a 50% duty cycie at the output, the delay to the true and complement 100 MHz signals should be 90°. This may be built precisely with 2 ns delay lines for the 200 MHz output or approximated by the two MC10101 gates as shown.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Soft Start for PSU
Arduino-based AVR High Voltage Programmer
2 watt Stereo audio amplifier
Battery indicator
Sound-activated-switch
Resistive Sensor Head (A2053) Manual
Circuit High-Voltage Generator with HEX FET Schematic Diagram
counter down timer circuit
DC Voltmeters
DIY LED Tachomter (RPM gauge)
LC189 making decorative lanterns with fans



Top