CDC339DW

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The CDC339DW is an essential component for a variety of clock and timing applications. It is a precision frequency driver which offers good performance, high reliability and low jitter, making it ideal for applications such as server clock distribution, consumer electronics, automotive and medical. This article will describe the application field of CDC339DW and its working principle.

Application Field

The CDC339DW is mainly used in clock and timing applications where an accurate and low jitter reference clock is needed. It is a precision clock buffer chip that accurately drives high frequencies of hundreds of MHz. This makes it ideal for applications such as server clock distribution, consumer electronics, automotive, and medical applications.

In server clock distribution applications, the CDC339DW is used to drive multiple clock signals in a high-speed network. It can provide an accurate and reliable clock to multiple remote devices or servers, ensuring the correct clocking of all nodes in the network. It is also used in consumer electronics to drive digital displays and other devices requiring timing signals.

Similarly, in automotive applications, the CDC339DW can be used to provide timing signals for the various electronic components in cars, such as instrument clusters and electronic control units (ECUs). Finally, in the medical field, it can be used to provide accurate timing signals for imaging systems, patient monitoring systems, and other medical devices.

Working Principle

The CDC339DW employs a cutting-edge low-jitter PLL architecture, which provides an exceptionally low jitter signal. This is enabled by the use of high-speed logic elements for signal processing, which helps reduce the generated jitter. The signal is then filtered using high quality analog components to further reduce the jitter.

The incoming reference clock is fed into an internal charge pump and phase locked loop (PLL) circuit. This circuit drives the output frequency accurately, regardless of the quality of the reference clock. With this approach, it can drive frequency with limited drift, eliminating the need for frequent calibration.

The CDC339DW is also designed with a low power consumption mode and can support multiple clock domains. The low power consumption mode ensures that it only draws the current required for the particular application, while the multiple clock domains support allows it to drive multiple clock domains simultaneously.

Additionally, the CDC339DW offers a wide frequency range, which makes it suitable for a variety of applications. It can generate frequencies ranging from 6 to 800 MHz, with an output accuracy of up to ±2%. The device also offers startup and holdup times under 1µs.

To ensure reliable operation, the CDC339DW features over-voltage, over-temperature, and ESD protection. It is also designed to meet the stringent radiated and conducted interference requirements of automotive applications.

In conclusion, the CDC339DW is an essential component for clock and timing applications. It offers high performance, low jitter, and high reliability, making it ideal for server clock distribution, consumer electronics, automotive, and medical applications. Moreover, its features such as low power consumption and wide frequency range further increase its suitability for a variety of applications.

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