Skyworks Solutions, Inc. Clock Generators, PLLs, Frequency Synthesizers SI5391B-A11905-GMR

The SI5391B-A11905-GMR is an ultra-low jitter clock generator capable of synthesizing a wide range of frequencies up to 1 GHz across 12 differential clock outputs. It utilizes a combination of a wide-band PLL and proprietary MultiSynth fractional synthesizer technology, delivering phase jitter performance as low as 69 fs RMS in precision calibration mode. The device supports input frequencies from 25 to 54 MHz for external crystals and 10 to 750 MHz for differential clocks, with output frequency ranges from 100 Hz to 1028 MHz for differential outputs and 100 Hz to 250 MHz for LVCMOS outputs. This clock generator is highly configurable, supporting various output formats including LVDS, LVPECL, LVCMOS, CML, and HCSL, with programmable signal amplitudes. It features a zero delay mode and allows for glitchless on-the-fly frequency changes. The SI5391B can be programmed via I2C or SPI interfaces and is compatible with ClockBuilderPro software for easy configuration. It operates within a temperature range of -40 to +85 °C and comes in a compact 64-QFN package. This product is suitable for applications in high-speed networking, including 100G/200G/400G switches and clock tree generation.