AD9577BCPZ-R7

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Adaptive Cable Equalizer AD9577BCPZ-R7

The AD9577BCPZ-R7 is a CMOS cable equalizer designed for clock and data distribution over long cables. It is well-suited for applications requiring high-speed signal integrity such as clocked serial systems and can be used in both interconnects and backplanes. The device helps to dramatically improve the performance of systems with signals that are sensitive to transmission loss and packet or packet errors.

Application Field

The AD9577BCPZ-R7 is particularly suited for clock and data distribution applications such as SerDes, LVDS, memory interfaces, digital video, and a variety of other industrial-grade applications. It offers an array of programmable features, including equalization impairments, and is designed to automatically adapt to varying cable lengths and equalization settings. As such, it can be used in both interconnects and backplanes for timing and data distribution.

Working Principle

The AD9577BCPZ-R7 adaptive cable equalizer utilizes adaptive equalization techniques to correct for channel variations. The device has a two-stage architecture which provides a range of gain (E) and peaking (P) settings to accommodate varying cable lengths and equalization requirements. The first stage provides fixed gain and peaking settings while the second stage adjusts its peaking dynamically to compensate for changes over time in the transmission line characteristics. This dynamic peaking helps to maintain signal integrity over long cable lengths. The device also includes transient suppressors that reduce overshoot and undershoot, resulting in improved signal-to-noise ratios.

The AD9577BCPZ-R7 utilizes a variety of features to improve signal quality and reduce data jitter. These include de-emphasis technology, adjustable input equalization, and dynamic ADC equalization. This equalization technology helps compensate for channel losses caused by high-frequency reflections and crosstalk. Additionally, the device\'s operation is independent of channel length and power supply variations, helping to ensure consistent performance over a wide range of cable lengths and voltages.

The AD9577BCPZ-R7 adaptive cable equalizer accepts input data from serial data streams and recovers clock signals and data signals from them. The device is also capable of de-skewing and phase-shifting signals to improve performance and provide phase-continuous clock and data. Additionally, the device includes an error-correction feature which helps to reduce or eliminate bit errors caused by transmission line impairments.

Conclusion

The AD9577BCPZ-R7 adaptive cable equalizer is a CMOS device designed specifically to improve the performance of systems with long cables, high-speed signals and sensitive packet errors. Its features include adjustable gain and peaking settings, transient suppressors, de-emphasis technology, adjustable input equalization and dynamic ADC equalization. The device also includes error-correction circuitry and supports both clock and data recovery. As such, the AD9577BCPZ-R7 is a useful solution for clock and data distribution applications requiring high-speed signal integrity.

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