Skyworks Solutions, Inc. Clock Generators, PLLs, Frequency Synthesizers SI5391B-A13903-GMR

The SI5391B-A13903-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, providing flexibility in generating both integer and non-integer related frequencies. The device offers sub-100 fs rms phase jitter performance, making it suitable for high-speed applications such as 100G/200G/400G switches and SerDes reference clocks. The input frequency range supports external crystals from 25 to 54 MHz, as well as differential and LVCMOS clock inputs. Output frequencies can range from 100 Hz to 1028 MHz for differential outputs and up to 250 MHz for LVCMOS outputs. The outputs are highly configurable, compatible with various signal formats including LVDS, LVPECL, and CML, with programmable signal amplitudes. The device can be configured using ClockBuilderPro software and supports I2C and SPI serial interfaces for programming. With a compact 64-QFN package and a temperature range of -40 to +85 ¬8C, the SI5391B-A13903-GMR is designed for applications requiring precise clock generation and flexibility in output configurations.