STMicroelectronics

TDA7427D

TDA7427D Description

The TDA7427D is a PLL Frequency Synthesizer designed by STMicroelectronics, a leading semiconductor manufacturer. This IC is part of the Clock Generators & Support Products category and is housed in a 20SO package. The TDA7427D is notable for its ability to generate clock signals with a maximum frequency of 290MHz, making it suitable for high-frequency applications. Despite being marked as obsolete, the TDA7427D remains a reliable choice for specific applications due to its robust design and performance.

TDA7427D Features

• PLL Capability: The TDA7427D incorporates a Phase-Locked Loop (PLL) which allows for precise frequency synthesis. This feature is essential for applications requiring stable and accurate clock signals.
• Input and Output: The device supports both clock and crystal inputs and outputs, providing flexibility in system design. This dual functionality ensures compatibility with various clock sources and output requirements.
• Supply Voltage Range: The TDA7427D operates within a supply voltage range of 4.5V to 11V, offering a wide operational window that accommodates different power supply configurations.
• Frequency Ratio: The device has a 3:1 input-to-output frequency ratio, enabling efficient frequency multiplication. This feature is particularly useful in applications where higher frequency outputs are needed from lower frequency inputs.
• Compliance and Sensitivity: The TDA7427D is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards. It also has a Moisture Sensitivity Level (MSL) of 3, which means it can be stored for up to 168 hours before reflow soldering.
• Mounting Type: The surface mount package makes it suitable for automated assembly processes, enhancing manufacturing efficiency and reliability.
• Package and Circuits: Housed in a tube package, the TDA7427D contains a single circuit, simplifying integration into various electronic systems.

TDA7427D Applications

The TDA7427D is ideal for applications requiring high-frequency clock generation and precise frequency control. Some specific use cases include:

• Telecommunications: The high-frequency capabilities of the TDA7427D make it suitable for generating clock signals in communication systems, ensuring accurate timing for data transmission and reception.
• Consumer Electronics: In devices such as TVs, monitors, and other consumer electronics, the TDA7427D can provide stable clock signals necessary for synchronization and performance optimization.
• Industrial Control Systems: The robust design and wide voltage range make the TDA7427D a reliable choice for industrial applications where precise timing and control are critical.
• Automotive Electronics: The TDA7427D can be used in automotive systems for clock generation in various electronic control units (ECUs), contributing to the overall reliability and performance of the vehicle's electronic systems.

Conclusion of TDA7427D

The TDA7427D, despite being marked as obsolete, remains a valuable component for applications requiring high-frequency clock generation and precise frequency control. Its PLL capability, wide supply voltage range, and compliance with environmental standards make it a versatile and reliable choice. The TDA7427D is particularly well-suited for telecommunications, consumer electronics, industrial control systems, and automotive electronics, where its performance and reliability can significantly enhance system functionality.