App note from SiTime about Voltage controled crystal oscillator (VCXO) specification, Link here (PDF)
VCXO are frequency control devices that allow change of output frequency as their input voltage varies. In selecting a VCXO for any application, a number of device performance specifications must be considered. This application note attempts to clarify the key VCXOspecific performance specifications, and to illustrate some of the tradeoffs associated with using a VCXO in an application.
from Dangerous Prototypes https://ift.tt/3bzYf5j