Crystal Oscillator Names (Part 2)

This article is the second installment and covers the following topics:Resonant Frequency，Crystal Oscillator Terminology

Crystal Oscillator Names (Part 1)

This article introduces key concepts such as crystal oscillator materials, structures, and circuits

TCXO temperature compensated crystal oscillator and OCXO constant temperature crystal oscillator

The frequency stability of the oven-controlled crystal oscillator is more than two orders of magnitude higher than that of the temperature-compensated crystal oscillator. Therefore, the oven-controlled crystal oscillator is used in high-end measuring instruments such as frequency meters, signal generators, network analyzers, etc. The temperature-compensated crystal oscillator has better power-on characteristics.

Voltage Controlled Crystal Oscillator Parameters and Selection

Voltage Controlled Crystal Oscillator (VCXO) is a type of quartz crystal oscillator. Its full name is voltage controlled crystal oscillator. It is a crystal oscillator that inserts a variable capacitance diode in series with a crystal resonator. The capacitance of the diode changes according to the external voltage to achieve an output frequency that can change according to the load capacitance characteristics of the crystal resonator.

The difference between real-time clock chip and crystal oscillator

Real-time clock chips and crystal oscillators both play an important role in providing clock signals in electronic devices, but their nature, functions and complexity are very different. Simply put, the crystal oscillator is the "heart" that generates a stable frequency, while the real-time clock chip is the "brain" that manages and distributes these "heartbeats".

Are 8m and 24m passive crystal oscillators universal?

Passive crystal oscillators 8MHz and 24MHz are generally not universal, which is determined by their role in the circuit and the circuit's frequency requirements.