SI5335D-B08043-GM

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The SI5335D-B08043-GM is a versatile single frequency synthesizer and jitter attenuator designed for high-performance clocking applications requiring large frequency span, low phase noise and low jitter. Its small form factor and wide range of frequency support make it suitable for a variety of commercial and industrial clock synthesis needs. It is ideal for applications such as telecommunications, audio, video, and broadcast systems, test equipment, and other clocking solutions.

The SI5335D-B08043-GM covers a large frequency range of 25MHz to 800MHz with a phase noise of -170dBc/Hz at 1KHz offset. Using a Patented Multi-Synth architecture, it provides high frequency stability with +/-4.5ppm frequency accuracy over 0 to +50C temperature range. It also offers low jitter of 200 Femtoseconds RMS and has on-chip VCXO control options.

The SI5335D-B08043-GM supports differential input and output, while its separate selectable differential output buffers ensures a low output voltage ripple in low frequency applications. Other features include low power consumption, internal frequency select control and a user-programmable frequency LOCK time delay.

The working principle of the SI5335D-B08043-GM can be broken down into its individual components: oscillator, phase locked loop (PLL) and frequency synthesizer PLL. The oscillator circuit generates a master frequency, which is locked to the desired end frequency using a PLL simulation loop. The frequency synthesizer PLL is then used to take the master frequency and divide it down to the desired output frequency. The PLL consists of a voltage controlled oscillator (VCO), a divide-by-N counter, a filter and a phase detector. The output of the oscillator is fed into the filter, which is nothing more than a filter used to smooth out the input signal. The filtered signal is then divided down by the divide-by-N counter, where N is the number of divisions. The output of the counter is then fed into the phase detector, where any differences between the output and the desired frequency is detected. The phase detector then sends a control voltage to the VCO, which adjusts the frequency of the oscillator until the desired frequency is achieved. Once the frequency is locked, the output voltage is sent to the output buffer, with the final frequency dependent on the input frequency and the total divisions of the counter.

The SI5335D-B08043-GM enables engineers to design high-performance and cost-effective clocking solutions for demanding timing applications. Its long operational life, along with its frequency accuracy, low noise and jitter, make it suitable for applications such as wireless network base stations, industrial, medical and scientific devices, media processing, and general clock regeneration. It is also compatible with some of the leading interface standards, making it easy to integrate into existing systems.

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