CMOS Oscillator
A CMOS output oscillator, also known as a Simple Packaged Crystal Oscillator (SPXO), integrates a quartz crystal and the oscillation circuit into a single module. HCI offers SPXOs covering a wide frequency range, from low frequencies such as 32.768 kHz to high frequencies up to 250 MHz. While the 3225 package is a highly popular model, larger packages like 7050 are also available. They are ideal for a broad spectrum of applications including communications, industrial controls, consumer electronics, and various digital systems requiring a stable and reliable clock signal.
Your Professional CMOS Oscillator Supplier
Suzhou Hangjing Elec & Tech Co., Ltd., founded in 2014, is a technology-driven small and medium-sized enterprise (SME) specializing in the full-spectrum R&D, design, production, and sales of quartz frequency control components. Rooted in a professional team and advanced manufacturing expertise, the company has developed a robust product portfolio encompassing quartz crystals, crystal oscillators, TCXO, VCXO, OCXO, crystal filters-ranging from foundational components to tailored systems.
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Superior Quality
A precision supply chain ensuring consistent product quality;An ultra-low failure rate validated by rigorous testing;High-quality materials and advanced technology make the product more reliable.
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Our Products has expanded into key international regions including Europe, Southeast Asia, the Americas, Oceania, and other major markets. This global network enables the company to provide full support to leading electronics manufacturers around the world, while maintaining a strong focus on high-quality products.
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All our products have passedGB/T 19001 - 2016/ISO 9001:2015 Quality Management System Standard, This demonstrates that they meet international standards for quality, safety, and performance.
Clock Oscillator 2520
A Clock Oscillator 2520 is an essential electronic device that generates a clock signal, or timing signal, used to synchronize operations in a circuit or application. It ensures that all parts of an electronic system work in harmony by providing a precise and stable timing reference.
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PARAMETER |
SUPPLY VOLTAGE |
REMARKS |
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1.8V |
2.5V |
3.3V |
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Frequency range |
1.25~125MHz |
1.25~125MHz |
1.25~125MHz |
32.768kHz available |
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Frequency stability |
±20ppm / ±25ppm /±50ppm |
See note below |
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Operating temperature range |
-10 to +60℃/-20 to +70℃/-40 to +85℃ |
Options up to +125℃ |
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Aging first year |
±3.0ppm |
@+25℃ |
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Supply current |
7mA |
10mA |
15mA |
With load 15pF |
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Output waveform and load |
LVCMOS 15pF |
30pF optional |
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Output voltage level HIGH |
1.62V |
2.25V |
2.97V |
Minimum |
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Output voltage level LOW |
0.18V |
0.25V |
0.33V |
Maximum |
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Rise and Fall times |
5ns |
4ns |
3ns |
<10MHz @10~90% of Vcc |
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4ns |
3ns |
3ns |
>10MHz @10~90% of Vcc |
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Symmetry (duty cycle) |
45~55% or 40~60% |
A 50%Vcc |
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Phase jitter RMS |
<1ps |
12kHz≤Fj≤20MHZ |
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Note: Stability includes frequency deviations at +25°C, over temperature range, due to supply voltage changes, output load changes, shock and vibration. |
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Advantages of Clock Oscillator 2520
Providing a Stable Time Base
Generates a periodic, high-precision clock signal, providing a synchronization reference for digital circuits, microprocessors, and communication systems.
High Frequency Stability
Precise frequency control is achieved through quartz crystals, ceramic resonators, or thermostats (such as OCXOs).
Low Phase Noise Improves System Performance
Phase noise reflects short-term frequency fluctuations in the clock signal; low phase noise means more stable timing.
Fast Startup and Low Power Consumption
Crystal oscillators typically have a startup time of milliseconds, meeting real-time requirements. Low voltage designs (such as 1.8V power supply) and sleep modes extend battery life (e.g., in smartwatches).
Shock Resistance
Can withstand high acceleration shocks (e.g., 10,000g), making them suitable for automotive electronics and industrial control. Industrial-grade oscillators support operating temperatures of -40°C to +85°C, while military-grade products can operate at -55°C to +125°C.
Balanced Cost and Performance
Ceramic resonators cost only one-third to one-fifth of crystal oscillators, making them suitable for applications where precision is less critical. Crystal oscillators offer the best balance between accuracy and cost and are the mainstream choice.
Type of Clock Oscillator 2520
Crystal oscillators
Utilize the piezoelectric effect of quartz crystals to achieve oscillation by converting mechanical vibrations into electrical signals. They offer high frequency accuracy (±10ppm to ±50ppm) and good stability, but are relatively expensive.
Ceramic resonator oscillators
Use ceramic materials as the resonator, resulting in lower cost than crystal oscillators. They offer lower accuracy (±0.5% to ±1%), but are compact and have fast startup.
RC oscillators
Frequency is determined by the charge and discharge time constants of resistors (R) and capacitors (C). They offer a simple structure and low cost, but their frequency is susceptible to temperature and component aging.
Temperature-compensated crystal oscillators
Built-in temperature sensors and compensation circuits offset the effects of temperature on frequency. They offer higher accuracy (±0.5ppm to ±5ppm) and are suitable for environments with large temperature fluctuations.
Oven-controlled crystal oscillators
Use a constant temperature chamber to maintain the crystal at a constant temperature, eliminating the effects of temperature fluctuations. They offer ultra-high accuracy (±0.001ppm to ±0.1ppm), but consume more power and are larger.
Applications of Clock Oscillator 2520
Automotive Systems
Clock oscillators sync engine control units (ECUs), which govern fuel injection and ignition timing in automobile systems. ECUs must be precise for engine performance and fuel economy. Clock oscillators provide timing accuracy for radar, LiDAR, and camera sensors and processors in ADAS.
5G Technology
Clock oscillators are needed for 5G wireless communication systems' ultra-low latency and security. They provide accurate scheduling for data packet coordination among network nodes. As a result, it gives high-speed data transmission integrity. Such precision increases beamforming, which directs wireless signals to particular devices for better signal strength and efficiency.
Data Centers
In data centers that handle cloud computing and large internet services, clock oscillators promote server speed and solidity. They stabilize server timing components. It helps guarantee synchronous data processing and avert data corruption. E.g., clock oscillators keep PCI Express and SATA connector timing accurate for rapid data transmission rates.
Consumer Electronics
Networking equipment, PC, notebooks, game consoles, and smart home gadgets use clock oscillators. They keep internal processors and peripherals in sync for effortless, responsive interactions.. In game consoles, they generate audio and visuals quickly for a better experience.
Testing and Verification of Clock Oscillator 2520
Frequency Accuracy Test
Test Conditions: Measure frequency deviation at nominal temperature (e.g., 25°C) and supply voltage (e.g., 3.3V ±5%).
Tool Selection: Use a high-precision frequency counter (resolution ≥6 bits) or spectrum analyzer to avoid instrument errors.
Phase Noise and Jitter Test
Phase noise: Measure at 1kHz, 10kHz, and 100kHz offset from the carrier to ensure compliance with protocol requirements (e.g., PCIe 3.0 requires <-110dBc/Hz @ 1MHz).
Period Jitter: Count 10,000 cycles using an oscilloscope and calculate the RMS value (typical value <1ps).
Environmental Stress Test
Temperature Cycling: Cycle testing between -40°C and +85°C to verify frequency stability (e.g., TCXO must meet ±0.5ppm).
Vibration Test: Subject automotive electronic equipment to random vibration (20g RMS, 10-2000Hz) to confirm oscillator failure.
Reliability Verification
High and Low Temperature Storage: Store at -55°C to +125°C for 48 hours and monitor frequency changes.
Life Test: Operate continuously for 1000 hours and monitor aging rate (e.g., OCXO annual aging rate must be <±0.01ppm).
Precautions
Soldering specifications: SMD oscillators must be reflow soldered (temperature ≤ 260°C) to avoid manual soldering that may cause cracking of the internal crystal.
Mounting force: Control force when inserting and removing DIP packages to prevent pin bending or breakage.
Handling specifications: Wear an anti-static wrist strap, use anti-static packaging and work surfaces to avoid ESD damage (Human Body Model ≥ 2kV).
Storage conditions: Store in a sealed dry cabinet (humidity <30%), temperature 0°C to +40°C to avoid moisture-induced frequency drift.
Recalibration: OCXOs stored for more than one year require recalibration to compensate for aging effects.
No output: Check the power supply, enable signal, and soldering quality.
Frequency deviation: Verify that the temperature and load capacitance are out of range.
Replacement principle: When replacing, select products of the same model or compatible parameters (such as frequency, package, and voltage level).
Certificates
FAQ
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