SI5338G-B08032-GMR

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The SI5338G-B08032-GMR is a high-performance Clock/Timing device optimized for application specific use. It is an integrated circuit that offers a variety of features to meet the needs of a wide range of applications. The SI5338G-B08032-GMR is designed to provide well-timed output signals from an input frequency at any given time. This device is a highly integrated solution for generating very-low jitter, low-noise clock signals for applications in Digital Video, Digital Audio, Networking, Storage, and Wireless transmission.

The SI5338G-B08032-GMR contains a crystal oscillator, a voltage-controlled crystal oscillator (VCXO), and dedicated coefficients for frequency tuning and jitter attenuation. It offers a wide range of frequencies from 100 kHz to1.9GHz. It is optimized for Digital Video applications, such as Gigabit Ethernet, HDMI, Serial ATA, SAS, and ASSPs.

The key features of the SI5338G-B08032-GMR are the low jitter output, wide-range frequency inputs, precision frequency control options, and unique monitoring features. The device has a zero-delay buffered output with low-noise performance and a very fast lock time to changes in frequency. It also has a high input frequency range and a wide variety of frequency outputs. The device is completely programmable and offers a variety of techniques to reduce jitter tracking and settle-time.

The device also has an integrated monitoring feature that enables the user to control the output jitter levels, to reduce noise-floor turbulence, and to enable tight frequency control. This monitoring feature can also be integrated with an external host processor to enable dynamic adjustments to the output clock signal. The SI5338G-B08032-GMR provides a reliable and robust solution for customers looking for high-performance clock managements.

The working principle of the SI5338G-B08032-GMR is based on a crystal oscillator principle. A quartz crystal or ceramic resonator is used to generate a periodic signal at a frequency determined by its mechanical properties. The oscillation frequency can be adjusted by changing the load capacitance that is connected to the crystal. The crystal load capacitance is typically changed by the voltage-controlled crystal oscillator (VCXO). The signal is then amplified, shaped, and fed to a PLL circuit where it is used to generate other clocks with different frequencies.

The PLL circuit is used to generate an output signal which is a multiple of the crystal oscillator frequency. The PLL circuit consists of phase-frequency detectors, a loop filter and voltage-controlled oscillators. The phase-frequency detectors compare the frequencies of the reference clock and the output from the voltage-controlled oscillators. A difference in the frequencies will cause the output of the phase-frequency detectors to increase or decrease, thus controlling the frequency of the output signal. The loop filter allows only the DC content of the signal to be passed to the voltage-controlled oscillators, thereby reducing jitter in the output signal.

Finally, the SI5338G-B08032-GMR has an on-chip feedback network which provides an additional level of frequency control, making the device even more flexible. This feedback network consists of two components: a programmable coefficient block and a synchronized loop compensation device. The programmable coefficient block provides an additional level of adjustment and allows the user to fine tune the output frequency. The synchronized loop compensation device enables the device to implement a variety of tuning techniques, such as frequency following, to reduce jitter.

In conclusion, the SI5338G-B08032-GMR is an excellent choice for applications requiring robust clock management. This device is optimized specifically for Digital Video applications, offering features and performance that meet the requirements of these application specific use cases.

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