SKYWORKS SI5391B-A13292-GM

The any-frequency, any-output Si5391 clock generators combine a wide-band PLL with proprietary MultiSynth™ fractional synthesizer technology to offer a versatile and high performance clock generator platform. This highly flexible architecture is capable of synthesizing a wide range of integer and non-integer related frequencies up to 1 GHz on 12 differential clock outputs while delivering sub-100 fs rms phase jitter performance optimized for 100G/200G/400G applications. Each of the clock outputs can be assigned its own format and output voltage enabling the Si5391 to replace multiple clock ICs and oscillators with a single device making it a true "clock tree on a chip." The Si5391 can be quickly and easily configured using ClockBuilderPro software. Custom part numbers are automatically assigned using ClockBuilder™ Pro for fast, free, and easy factory pre-programming or the Si5391 can be programmed via I2C and SPI serial interfaces.

• Generates any combination of output frequencies from any input frequency
• Ultra-low phase jitter performance
  • 69fs RMS (Precision Calibration)
  • 75fs RMS (integer mode)
  • 115fs RMS (fractional mode)
• Input frequency range:
  • External crystal: 25 to 54 MHz
  • Differential clock: 10 to 750 MHz
  • LVCMOS clock: 10 to 250 MHz
• Output frequency range:
  • Differential: 100 Hz to 1028 MHz
  • LVCMOS: 100 Hz to 250 MHz
• Highly configurable outputs compatible with LVDS, LVPECL, LVCMOS, CML, and HCSL with programmable signal amplitude
• Optional zero delay mode
• Glitchless on the fly output frequency changes
• DCO mode: as low as 0.001 ppb steps
• Core voltage
  • VDD: 1.8 ±5%
  • VDDA: 3.3 ±5%
• Independent output clock supply pins: 3.3 V, 2.5 V, or 1.8 V
• Serial interface: I2C or SPI
• In-circuit programmable with non-volatile OTP memory
• ClockBuilder Pro software simplifies device configuration
• Temperature range: -40 to +85 °C
• Pb-free, RoHS-6 compliant

• 100/200/400G switches
• 56G/112G PAM4 SerDes reference clocks
• Clock tree generation replacing XOs, buffers, signal format translators
• Clocking for FPGAs, processors, memory
• Ethernet switches/routers
• OTN framers/mappers/processors