SX7M28.224M20F30TNN 28.224MHz CMOS 4-SMD Crystal Oscillator

SX7M28.224M20F30TNN is a high-performance 28.224MHz CMOS crystal oscillator manufactured by SCTF, a reputable name in passive components. This surface-mount device is designed to provide a precise and stable clock signal, which is fundamental for the synchronous operation of digital circuits. As a crucial timing component, it generates an oscillating voltage at a specific frequency, enabling microcontrollers, FPGAs, and other integrated circuits to execute operations in a synchronized manner. Its compact 4-SMD package makes it suitable for space-constrained applications, offering a reliable timing solution across a wide range of electronic systems.

Key Specifications

The Output type is CMOS, which signifies that the oscillator produces a digital square wave signal compatible with CMOS logic families. This is a widely adopted standard in digital electronics due to its low power consumption and high noise immunity, making it suitable for direct interfacing with most microcontrollers and digital ICs. The Series, 7CM, indicates a specific product line from SCTF, often denoting particular performance characteristics or package styles within their crystal oscillator portfolio. The core specification is its Frequency of 28.224MHz, which is the exact rate at which the oscillator generates its clock pulses. This precise frequency is critical for applications requiring specific timing, such as data communication protocols or audio/video processing. The compact Size (mm) of 7.0×5.0×1.30 highlights its small footprint, which is advantageous for miniaturized electronic devices where board space is at a premium. The Input Current of 10-20mA specifies the typical current draw required for the oscillator’s operation, an important consideration for power budget management in battery-powered or low-power designs. Its Mounting Type is Surface Mount, meaning it is designed for automated assembly onto printed circuit boards (PCBs) using reflow soldering, which is the industry standard for high-volume manufacturing. The Component Type is clearly identified as a Crystal Oscillator, distinguishing it from simpler crystals or resonators by its integrated oscillating circuit. The Package / Case is a 4-SMD, referring to the four-pin surface-mount device package that facilitates easy integration onto PCBs. The broad Supply Voltage range of 1.62 – 3.63V offers significant flexibility, allowing it to be used in systems operating on 1.8V, 2.5V, 3.3V, or other common low-voltage rails. The Frequency Range of 1 – 54MHz indicates the broader family of frequencies available within this oscillator series, showcasing its versatility. Frequency Stability of ±50ppm (parts per million) describes how much the output frequency can deviate from its nominal value over temperature, supply voltage, and aging, indicating a good level of precision for many applications. Similarly, Frequency Tolerance of ±20ppm specifies the initial accuracy of the frequency at standard conditions, which is crucial for applications demanding tight timing. Finally, the wide Operating Temperature range of -40℃ to +85℃ ensures robust performance in challenging industrial and automotive environments, from extreme cold to high heat.

Features and Benefits

• Precise and Stable Timing: The 28.224MHz frequency with ±20ppm tolerance and ±50ppm stability ensures accurate and consistent clock signals, vital for reliable digital system operation and data integrity.
• CMOS Output Compatibility: Its CMOS output allows for direct interfacing with a wide range of digital ICs, simplifying circuit design and reducing component count, while benefiting from low power consumption and high noise immunity.
• Wide Operating Voltage Range: With a supply voltage from 1.62V to 3.63V, this oscillator is highly versatile, supporting various low-voltage digital platforms and simplifying power supply design.
• Compact Surface Mount Package: The 7.0×5.0×1.30mm 4-SMD package is ideal for space-constrained applications, enabling miniaturization of electronic devices and efficient PCB layout.
• Robust Temperature Performance: Designed to operate reliably from -40℃ to +85℃, the SX7M28.224M20F30TNN is suitable for harsh industrial, automotive, and outdoor environments.

Typical Applications

The SCTF SX7M28.224M20F30TNN crystal oscillator finds extensive use in various electronic applications where precise timing is paramount. One significant application is in microcontroller-based systems, where it provides the essential clock signal for the CPU, peripherals, and timers, ensuring accurate execution of code and synchronized data processing in embedded systems. For instance, in IoT devices or smart home appliances, its stable clock enables reliable sensor data acquisition and communication. Another key area is in data communication equipment, such as wireless modules (Wi-Fi, Bluetooth), network routers, and modems. The 28.224MHz frequency can be critical for generating baud rates or sampling frequencies required for various communication protocols, ensuring error-free data transmission and reception. Furthermore, it is well-suited for industrial control systems and automation, including PLCs, motor control units, and robotic systems. Its wide operating temperature range and robust performance ensure reliable operation in demanding factory environments, where precise timing is essential for process control and synchronization of machinery. In portable and battery-powered devices, the low input current (10-20mA) and wide supply voltage range make it an excellent choice for extending battery life while maintaining high performance in devices like handheld meters, GPS trackers, and portable medical equipment. Lastly, it can be employed in consumer electronics such as digital cameras, set-top boxes, and audio/video processing units, where a stable clock is necessary for high-quality signal processing, display refresh rates, and overall system performance.

The SX7M28.224M20F30TNN is a reliable and versatile component for a multitude of electronic designs. This product is stocked and shipped across India by Cirkit Electro Components, Mumbai, ensuring prompt availability for your projects.

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