The difference between a programmable oscillator and an active crystal oscillator

Active crystal oscillator: A complete module integrating a quartz crystal and oscillation circuit. It directly outputs a square wave signal of a fixed frequency after power-on, requiring no external circuitry. Programmable crystal oscillator: A crystal oscillator whose output frequency can be set via programming. Users can adjust parameters such as frequency according to their needs, offering greater flexibility.

High-speed optical module clock solution: YSO233UJ achieves ultra-low jitter through high-frequency photolithography.

The YSO233UJ series differential crystal oscillators are specifically optimized for the critical frequencies of 156.25MHz and 312.5MHz in optical modules, featuring ultra-low jitter, wide-temperature stability, and high reliability.

What to do if the crystal oscillator does not oscillate

As a professional crystal oscillator manufacturer, YXC brings you a systematic, accurate and efficient "three-step positioning method" - following the logic from the outside to the inside, from easy to difficult, to help you quickly narrow the scope of investigation and accurately locate the fault direction!

BMS - Why is it necessary to carry a separate RTC real-time clock chip

The RTC clock chip (YSN8563) integrates timer, alarm, clock output, accurate timestamp and other functions, providing convenience for system design and accurate fault location.

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.