SY89429AZH-TR

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Clock/Timing Technology is a critical component of many aspects of our lives as it’s used to measure and regulate time for a variety of devices and systems. From phones to computers, televisions to automobiles, almost everything has some sort of clock or timing component. One such technology is the SY89429AZH-TR, a high performance voltage controlled Crystal Oscillator (VCXO) synthesizer. This application note will provide a general overview of its field of application and working principle.

The SY89429AZH-TR is a voltage controlled crystal oscillator (VCXO) synthesizer that has been specially designed to provide reliable, stable frequency output with fast phase-locked loop (PLL) locking times. It is ideal for use in applications such as frequency synthesis, clock synthesis, clock/data recovery, timing, frequency control and more. With its wide frequency range of 1MHz to 140MHz and highly configurable output settings, the SY89429AZH-TR is suitable for a variety of different applications.

The SY89429AZH-TR\'s PLL is composed of a dual-mode voltage-controlled oscillator (VCO) and a phase/frequency detector (PFD). The VCO uses an external crystal as its reference and is able to generate an output frequency in a range of 1MHz to 140MHz. This frequency is divided by an integer divider and is sent to the PFD. The PFD then compares the divided signal to the reference input from the crystal and sends the difference signal to the VCO. This signal adjusts the VCO\'s frequency until it matches the reference signal. The VCO\'s output is then sent to a digital divider, which divides it by a programmable divisor to create the desired output frequency.

In addition to the PLL, the SY89429AZH-TR also features an on-chip programmable delay line (PDL). This allows the device to be used in applications that require precise timing and synchronous clocking. The PDL can be programmed to delay the output signal up to 4nsec, allowing it to adjust the output signal by 4nsec intervals. This gives designers the flexibility to accurately synchronize multiple signals without any additional external components.

The SY89429AZH-TR is an ideal solution for a variety of clock/timing applications. Its wide frequency range and highly configurable output settings make it a versatile device for any application that requires precise timing. Its fast locking times and on-chip PDL make it suitable for applications that require both clock generation and high-precision timing. With its low power consumption and small form factor, the SY89429AZH-TR is ideal for a variety of embedded applications.

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