CDCLVD1204RGTR Integrated Circuits (ICs)

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Clock Buffers, Drivers, and Receivers are used to edge-shape, distribute and transmit low-skew, low-jitter clocks, reducing the negative impacts of EMI/RFI and preserving signal integrity. The CDCLVD1204RGTR is a Clock/Timing driver and receiver developed by Texas Instruments (TI). It utilizes differential line transmission and a Maximum-Length Sequence (MLS) coding algorithm to deliver high-speed, low-power operation with low EMI. This article examines the application field and working principle of the CDCLVD1204RGTR.

Overview of CDCLVD1204RGTR

CDCLVD1204RGTR comprises two devices, the CDCLVD1204RT (Clock Driver) and the CDCLVD1204RG (Clock Receiver). The devices are ideal for high speed, low-power clock transmission and conditioning applications. It supports data rates up to 25 Gbps to give high bandwidth and reliable signal transmission over linear (uncorrelated) and differential channels. The CDCLVD1204RGTR driver and receiver are built on TI’s Maximum-Length Sequence (MLS) transmission technology. This technology reduces the eye-open time and minimizes EMI/RFI susceptibility. The MLST’s robust transmission algorithm is able to tolerate input transitions that are significantly faster than the receiver clock frequency. It is also highly flexible and supports bidirectional, clock-only, or 2-bit double data rate (DDR) transmission.

Application Field of CDCLVD1204RGTR

The CDCLVD1204RGTR is used in a variety of clock transmission and switching applications. It is used in high-speed, low-latency clocks for applications such as wireless communications, high-speed computing, and data centers. In these applications, the receiver clock signal needs to be reliable and free from EMI/RFI interference, making the MLS transmission system ideal. The device is also commonly used in PCIe and Serial Attached SCSI (SAS) systems, as well as in fiber optics.

This device is also useful for time-sensitive applications such as video editing and broadcasting. With a low-jitter, low-skew output, the CDCLVD1204RGTR can provide accurate clock signal, thus reducing latency and improving performance. In addition, it is used in memory buffer and storage applications such as RAM and DRAM systems.

Working Principle of CDCLVD1204RGTR

The CDCLVD1204RGTR utilizes the Maximum-Length Sequence (MLS) algorithm to reduce the effect of noise and provide a reliable clock transmission. The algorithm works by sending a series of bit patterns to the receiver, each pattern being a slightly different length. The receiver will then compare the incoming data to the stored bit patterns and determine which one is the correct one. This allows the device to reject erroneous bits and ensure the accuracy of the clock signal.

The CDCLVD1204RGTR driver and receiver are both powered by a 3.3V power supply. The input signal is sent to the driver via differential clock inputs, which provide robust signal transmission. The signal is then edge-shaped and maximum-length shifted to the receiver. The receiver then decodes the incoming data and outputs it as a low-jitter, low-skew clock signal. The device also features automatic equalization, which compensates for channel loss and minimizes EMI/RFI.

Conclusion

This article has examined the application field and working principle of the CDCLVD1204RGTR clock driver and receiver developed by Texas Instruments. This robust, low-power device is suitable for a wide range of clock transmission and conditioning applications, including fiber optics and wireless communications. By utilizing Maximum-Length Sequence coding, the device is able to reduce the effect of noise and deliver low-skew, low-jitter signals that are free from EMI/RFI interference. All of these features make the CDCLVD1204RGTR a highly desirable solution for high-speed data transmission applications.

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