The difference between VCTCXO (Voltage-Controlled Temperature-Compensated Crystal Oscillator) and TCXO (Temperature-Compensated Crystal Oscillator)

A TCXO is a temperature-compensated crystal oscillator. It uses a built-in temperature compensation circuit, composed of thermistors and resistive-capacitive components, to reduce the impact of temperature changes on the oscillator's frequency. A VC-TCXO, on the other hand, is a voltage-controlled temperature-compensated crystal oscillator. It adds temperature compensation functionality on top of voltage control, allowing the oscillator's frequency to be adjusted by an external voltage. The main difference between a VC-TCXO and a TCXO is the presence of voltage control functionality.

What are the output waveforms of a crystal oscillator?

The output waveform of a crystal oscillator (XO) is a technical specification as important as the package size. These output waveforms can be broadly categorized into two types: sine wave and square wave.

YXC High-Precision Quartz Programmable Voltage-Controlled Temperature-Compensated Oscillators: YSV531PT Series

Through independent research and development, YXC has successively launched the following products: the YSO690PR series of programmable general oscillators; the YSO210PR and YSO212PU series of programmable differential oscillators; the YSV310PR series of programmable voltage-controlled oscillators; and the YSV220PR series of programmable voltage-controlled differential oscillators.

What are the technical specifications to consider when selecting a crystal oscillator?

Compared to crystals, the most prominent feature of crystal oscillators is that they directly output a clock signal as soon as power is applied. The clock signal levels also vary widely, with supported levels including TTL, CMOS, HCMOS, LVCOMS, LVPECL, and LVDS. When selecting a crystal oscillator, you should choose one that matches the required clock signal level.

High-stability temperature-compensated crystal oscillators – the best choice for satellite positioning modules.

In fields with strict size requirements, such as smart wearable devices, drones, and portable positioning terminals, miniaturized positioning modules are needed. The YSO510TP can meet the demand for miniaturized positioning modules, offering a minimum package size of 2.0 x 1.6mm, which helps achieve miniaturization and compact design of devices and improves the overall integration of the equipment.

Measures to prevent crystal oscillator aging

How much do you know about crystal oscillator aging? Crystal oscillators undergo anti-aging treatment during the manufacturing process. There are two types of crystal oscillators: crystal resonators and crystal oscillators. During production, both types require anti-aging treatment, but these treatments differ.