844S004BKI-01LFT

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Clock generators, PLLs (phase-locked loops), and frequency synthesizers are essential components in many of today\'s consumer and industrial applications. From telecom systems to automotive control to communications system and beyond, these components are critical in ensuring operations remain in sync and on schedule. 844S004BKI-01LFT stands out among these technology fields, offering superior performance and improved flexibility for the most demanding applications.

844S004BKI-01LFT Overview

The 844S004BKI-01LFT is a low jitter frequency synthesizer operating up to 8GHz – making it ideal for applications ranging from digital video to cable TV and beyond. This frequency synthesizer features integrated Phase/Frequency and Lock Detect which simplifies tracking of the reference oscillator for superior jitter performance. Additional features of the 844S004BKI-01LFT include external reference buffer support, programmable prescaler, spread spectrum capability, and two programmable outputs.

Application Field

Because of its superior performance and flexibility, 844S004BKI-01LFT is widely used in modern consumer technology applications. These include digital television and video, cable TV, imaging and high speed encoding/decoding, test and measurement, and telecom systems. Due to its low jitter levels and programmable outputs, the 844S004BKI-01LFT has become a popular choice over other frequency synthesizers in these applications.

Working Principle

844S004BKI-01LFT utilises an on-chip VCO (voltage controlled oscillator) to generate the desired output frequency. The frequency of the VCO can be adjusted and stabilised by the embedded Phase Locked Loop (PLL) circuit. This circuit allows the VCO output to be phase-corrected and synchronised with the reference clock signal, even if the VCO drifts out of its stability range or is subjected to external interfering signals. The integrated circuit also includes an external reference buffer to stabilise external reference clock signals.

The prescaler inside the 844S004BKI-01LFT circuit is another important element. This prescaler can divide the reference clock input frequency to the desired output frequency. With two programmable outputs, the 844S004BKI-01LFT can generate two separate clock signals, making it ideal for applications requiring two trains of signals for operation. Lastly, the spread spectrum capability of the 844S004BKI-01LFT ensures electromagnetic compatibility and eliminates system noise due to transmitted harmonics.

Conclusion

The 844S004BKI-01LFT is an advanced frequency synthesizer providing excellent performance and flexibility for modern applications. It features an integrated Phase/Frequency and Lock Detect which simplifies the tracking of the reference oscillator, yielding improved jitter performance. Its programmable prescaler and spread-spectrum capability ensure electromagnetic compatibility and eliminates system noise. With its two programmable outputs, the 844S004BKI-01LFT is well suited for applications where multiple clocks are necessary.

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