An oscillator in which the frequency is controlled by a piezoelectric crystal. A crystal oscillator may require controlled temperature because its operating frequency is a function of temperature. Types of crystal oscillators include voltage-controlled crystal oscillators ( VCXO), temperature-compensated crystal oscillators ( TCXO), oven-controlled crystal oscillators ( OCXO), temperature-compensated-voltage controlled crystal oscillators ( TCVCXO), oven-controlled voltage-controlled crystal oscillators ( OCVCXO), microcomputer-compensated crystal oscillators ( MCXO), and rubidium crystal oscillators ( RbXO).

an oscillator that produces electrical oscillations at a frequency determined by the physical characteristics of a piezoelectric quartz crystal

an electronic device that uses the mechanical resonance

an inherently stable device, but by controlling the temperature of the crystal, orders of magnitude of improved stability can be realized

a hybrid electronic component that combines a crystal and an