SI5335D-B08644-GMR

The SI5335D-B08644-GMR (hereinafter referred to as the SI5335) is a clock generator, phase-locked loop (PLL) and frequency synthesizer from Silicon Labs. Clock/timing systems are essential elements in modern electronics, allowing a device to coordinate multiple operations within itself and communicate with other components. As such, a wide variety of such systems are used in applications across many industries, ranging from aerospace engineering to medical technology. The SI5335 is suitable for use in a wide range of these applications, delivering reliable performance and advanced features to enable the design of high-performance systems.

The SI5335 is a low-noise, low-skew clock generator and frequency synthesizer specifically designed for applications requiring high integration and performance. With integrated low-noise PLLs, the SI5335 is capable of generating up to six clock signals from a single reference input, with programmable divide/multiply and output slew rate control. The device is designed to meet the requirements for applications such as database servers and network routers, featuring regular output, jitter, cycle-to-cycle jitter, holdover and switching characteristics suitable for critical server applications.

The SI5335 works by combining a differential 1 PPS reference input with a frequency synthesizer circuit and clock generator. The reference input can be either an external 1 PPS or an on-board crystal oscillator, and the SI5335 can be configured to use an on-board oscillator with a frequency from 10 to 25 MHz and a temperature stability of up to +/-5ppm over temperature. Using this reference input, the frequency synthesis circuit employs a combination of an analog phase-locked loop (PLL) and a digital frequency lock loop (FLL) to generate up to six clock outputs.

The PLL is used to precisely multiply or divide the reference frequency up to 24x in a single step, with an integrated divider circuit providing flexible frequency hopping and spread spectrum options. The FLL is a digital frequency loop which maintains output frequency accuracy, allowing the reference frequency to be tracked over a wide range of temperature, voltage and process corners, with low output frequency drift. The SI5335 also supports easy integration into systems by providing multiple clock outputs, each of which is independently configurable.

The SI5335 allows a designer to select the appropriate PLL topology, depending on the application requirements, with options for single loop, dual loop, phase/frequency detector (PFD) detect, FLL detect and charge pump detect. This feature allows the SI5335 to be used in a wide range of applications, from low-frequency jitter-sensitive point-of-sale applications to high-frequency networking and telecommunications applications.

The SI5335 is designed for applications in the Enterprise, Industrial and Consumer segments, with a variety of advanced features to optimize system performance. These include FlexComm with flexibility to configure the SI5335 for a large range of system demands, Advanced System Calibration (ASC) for accuracy and reliability of GPS receivers and other navigation systems, and Selectable Loop Filters for customizing the loop bandwidth and settling times to suit the application. The SI5335 also features an advanced PowerSafe architecture which reduces operating current when the device is in standby mode, while maintaining the same performance as a full power device.

The SI5335 is an extremely versatile and capable device which can be used in a wide range of clock/timing applications, from consumer point-of-sale equipment to high-performance industrial and telecommunications systems. With advanced features, flexible configuration options and low power consumption, the SI5335 is an ideal solution for system designers requiring a reliable, high-performance clock/timing solution.