Several important parameters of temperature compensated crystal oscillator

A temperature-compensated crystal oscillator (TCO) is a high-precision oscillator that adds temperature compensation to a standard active crystal oscillator. While the frequency of a standard crystal oscillator is easily affected by ambient temperature fluctuations, resulting in unstable device performance, a TCO's built-in compensation circuit automatically adjusts the oscillation frequency to offset temperature variations, providing an extremely stable frequency signal.

Circuit diagram and pin diagram of active crystal oscillator

Ordinary active crystal oscillators have 4 pins. The missing corner is called pin 1 (PIN1) or pin #1. In counterclockwise order (pins facing downwards), they are 2, 3, and 4 respectively.

Professional terminology for crystal oscillators

Understanding crystal oscillator terminology is very helpful for crystal oscillator procurement and selection

Precise synchronization, robot communication module crystal oscillator

The robot's communication system has requirements for crystal oscillator characteristics, including high-precision frequency stability, low phase noise and jitter, wide temperature range adaptability, miniaturization and low power consumption.

Precise clock, stable core: ±0.05PPM high-precision temperature-compensated crystal oscillator

Capacitor matching for passive crystal oscillators

Matching capacitors are not absolute or fixed values. It is generally best to choose two identical capacitors for matching capacitors of passive crystal oscillators. In many design schemes, commonly used capacitors are 12pF, 15pF, 22pPF, 33pF, etc., which are roughly on the order of 20pF.