Data transmission is getting faster.
From 1G and 10G to 25G, 100G, 800G and even 1.6T optical communication, modern systems are moving more data at increasingly higher speeds.
But no matter how fast the data moves, one fundamental element remains essential: the clock.
Think of the clock as the starting signal in a race. If the signal occurs at exactly the right moment every time, data can be sampled accurately. If the timing itself begins to fluctuate, the receiver may sample the signal too early or too late.
This is why clock phase noise and jitter become increasingly important as data rates rise.
An ideal clock would generate perfectly regular cycles, with every transition occurring at exactly the expected moment.
Real oscillators, however, are never completely ideal.
The crystal, oscillator circuit, power supply, temperature variation and other factors can introduce tiny timing fluctuations.
In the frequency domain, these short-term phase fluctuations are commonly described as phase noise. In the time domain, timing variations are expressed as jitter.
For high-speed data systems, these small timing errors matter because the duration of each bit becomes shorter as the data rate increases.
When clock jitter grows, the sampling point can shift horizontally within the eye diagram, reducing the available timing margin.
The result is straightforward:
Higher jitter → narrower eye opening → lower timing margin → greater risk of bit errors
In other words, data transmission may be about speed, but maintaining reliable high-speed transmission depends heavily on clock quality.
This is where an OCXO, or Oven-Controlled Crystal Oscillator, can play an important role.
An OCXO maintains the crystal at a controlled operating temperature, helping reduce frequency variations caused by changes in the surrounding environment.
For high-performance clock systems, however, frequency accuracy and stability are only part of the story.
Another critical specification is:
Phase noise.
Low phase noise means the clock signal has lower short-term phase fluctuation, making it suitable for systems that require a stable and clean frequency reference.
The YXC YOV2020DP is a 20 × 20 mm OCXO designed for applications such as communication equipment, test and measurement instruments, and precision frequency references.
Typical specifications include:
Frequency: 10 MHz / 100 MHz
Temperature stability: ±3 ppb
Daily aging: ±0.5 ppb
Supply voltage: 5 V / 12 V
Phase noise at 1 kHz offset: typically -165 dBc/Hz
Key characteristics: high stability, low phase noise, and a balance of performance, cost, and supply flexibility
A 10 MHz OCXO is widely used as a reference clock in communication systems, instruments, and high-stability timing equipment.
A 100 MHz OCXO, meanwhile, can serve applications requiring a higher-frequency reference for high-performance digital and timing systems.
For systems with demanding phase-noise requirements, YXC also offers the YOV2525DP series.
Typical specifications include:
Package: 25 × 25 mm
Frequency: 10 MHz / 100 MHz
Phase noise at 1 kHz offset: -160 dBc/Hz
The YOV2525DP is suitable for clock-sensitive applications such as:
HiFi audio systems
High-performance digital equipment
Test and measurement instruments
Other low-phase-noise clock applications
In HiFi audio equipment, a low-phase-noise clock helps reduce timing uncertainty in the clock reference.
In high-speed digital systems, it provides a more stable timing reference for signal processing and data transmission.
The applications may be different, but the principle is the same:
Reduce timing uncertainty and improve system stability.
For high-speed communication, data centers, optical communication, test and measurement equipment, and high-end audio systems, the clock is more than a simple frequency generator.
It is the timing reference that keeps the entire system synchronized.
The more stable the clock, the more timing margin the system can preserve.
YXC provides OCXO solutions for different frequency, package, and performance requirements:
YOV2020DP
20 × 20 mm | 10 / 100 MHz | ±3 ppb | Phase noise at 1 kHz: typically -165 dBc/Hz
YOV2525DP
25 × 25 mm | 10 / 100 MHz | Phase noise at 1 kHz: -160 dBc/Hz
From communication equipment and test instruments to high-speed data transmission and HiFi audio, YXC continues to provide stable, low-phase-noise OCXO solutions for precision timing applications.
Data can keep getting faster.
The clock must remain stable.
