Oscillator with Ceramic Resonator


Test circuits to establish pulling range of an oscillator with a ceramic resonator.

Circuit 1




Device Lower limit Upper limit
3.58 MHz resonator 3.585 MHz 3.650 MHz
4 MHz resonator 4.007 MHz 4.072 MHz
6 MHz resonator 6.010 MHz 6.099 MHz
6 MHz X-tal 5.999 MHz 6.004 MHz
33.8 MHz resonator 33.74 MHz 33.80 MHz

Circuit 2




Device Lower limit Upper limit
3.58 MHz resonator 3.460 MHz 3.647 MHz
8 MHz resonator 7.728 MHz 8.022 MHz
10.24 MHz resonator 10.128 MHz 10.148 MHz
10.7 MHz resonator 10.459 MHz 10.503 MHz


Using a capacitor with a smaller minimum capacitance probably increases the pulling range for the 10 MHz resonators.

Archive containing the Xcircuit files (encapsulated postscript).