SI51218-A07909-GMR

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The SI51218-A07909-GMR is a Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers device that is used in several different fields. The device consists of a Voltage Controlled Oscillator (VCO), Phase Comparator, Programmable Divider and loop filter. This product employs a high performance, low noise, low jitter VCO core to enhance the features of the typically used in these devices.

The VCO core of the SI51218-A07909-GMR is a silicon-germanium (SiGe) PLL process with an operating voltage range from 0.8 V to 2.0 V. This VCO core provides superior linear frequency control and robust noise performance over a wide frequency range of 1.2 GHz to 6.0 GHz. The PLL core features an excellent noise performance which is necessary for low-jitter applications. The input frequency range for the PLL is 1.2 MHz to 120 MHz.

The Programmable Divider of the SI51218-A07909-GMR is able to operate in a variety of modes. The divider has a maximum division ratio of 8,192 and can be configured to operate as a frequency multiplier by using the optional divide-by-four mode. This allows the user to produce frequency and phase outputs of higher than the reference input frequency. The divider can also be configured to enable high accuracy frequency sharing between frequency sources.

The Phase Comparator of the SI51218-A07909-GMR provides several advanced features. It contains a dedicated input port which allows the direct connection of a second reference frequency source. This enables advanced frequency synchronization between multiple PLLs. The input port also allows the user to adjust the frequency offset between the two sources. This accommodation allows the user to fine-tune the relative phase offset of each reference output and simplifies any frequency filtering requirements.

The loop filter of the SI51218-A07909-GMR is designed to provide maximum jitter performance and low noise operation. It is a combination of both passive and active components and provides a low pass filter for reducing high frequency noise in the output signal. The filter also provides an adjustable gain control for damping or loop stability, enabling the user to optimize the performance of the filter.

The SI51218-A07909-GMR can be used in a wide range of applications, such as mobile communications, wireless networking, phase gain control for modulators/demodulators and adjustable output phase noise or pre-emphasis control. Its ability to generate low-jitter outputs with high frequency accuracy makes it particularly suitable for networks and communications projects. In addition to its high performance capabilities, it also offers a wide range of features such as programmable frequency offset and programmable output amplitude, making it an excellent choice for a wide range of products.

Overall, the SI51218-A07909-GMR is an excellent device for a wide range of Clock/Timing – Clock Generators, PLLs, Frequency Synthesizers applications. The combination of its high performance, low noise, and wide frequency range provides excellent performance for a wide variety of projects. The device’s advanced features, such as programmable frequency offset and programmable output amplitude, add to its versatility and make it an ideal choice for a variety of applications.

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