98ULPA877AHT

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Clock/Timing-Application Specific products are designed to meet specific needs, typically in medical and industrial applications. The 98ULPA877AHT is a versatile multi-channel PLL timing chip designed for a wide range of applications which need precise timing with very little noise and jitter. It combines an advanced Spread-Spectrum technology and reference clock synthesizer to provide a highly reliable timing solution that reduces noise, eliminates jitter and optimizes demand for distribution of reference-clock signals.

The 98ULPA877AHT offers four independent PLLs and reference clock synthesizers that are designed to accommodate a variety of applications. Each PLL comprises of a phase locked loop (PLL) based, non-overlapping clock and an integrated fractional-N frequency synthesizer. The four PLLs provide a wide range of output frequencies and a wide array of timing signal output formats including variable, low-jitter, low-noise reference clock signals and variable clock signal outputs in several industry-standard formats. The reference clock input signals, up to 200MHz, can have a wide range of protocol formats including I2C, SPI, and RS-422.

The 98ULPA877AHT is ideal for a range of precise clock applications. It can be used in digital audio, video and other semiconductor systems requiring precise low-jitter reference signals. It is also suitable for medical systems requiring highly precise clock signals, providing a precise timing source to precise control systems such as MRI, CT scanners and ultrasound monitoring equipment. In addition, the 98ULPA877AHT is also used in precise test and measurement applications variations and for moderate clock/timing applications such as automotive sensors, switches and display references.

The 98ULPA877AHT is specially designed to reduce noise and jitter by utilizing Spread-Spectrum technology. Spread-Spectrum is a frequency modulation algorithm that spreads the timing signal output frequency across a specific range. It works by modulating the reference input clock signal and outputting a series of slowly changing frequencies, while still providing a precise timing signal. This reduces both jitter and power consumption and eliminates the need for additional shielding, resulting in a low-noise clock signal with superior stability.

The 98ULPA877AHT also features a range of other features optimized for precise applications. Its on-die control circuitry provides for precise output frequencies and highly-accurate delay settings. It supports digital phase-locked loop (DPLL) and fractional frequency synthesis, allowing for greater flexibility and accuracy in designing precise timing systems. It also contains reference cycle counter, frequency accuracy and jitter measurement — ideal for use in test and measurement applications. Moreover, the 98ULPA877AHT has temperature-compensating features, low-leakage ESD protection and low power consumption, making the chip ideal for use in a variety of settings.

The 98ULPA877AHT is a versatile and reliable timing chip suitable for a wide variety of precise clock and timing applications. Providing precise signals with very little noise and jitter, it is an ideal option for applications in both medical and industrial settings. Its advanced Spread-Spectrum technology reduces noise and jitter, ensuring reliable timing with minimal power consumption. In addition, its on-die control circuitry and range of features enable it to be used in a variety of settings, making it an invaluable tool for precise timing applications.

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