Low Jitter, Quad PLL, 4-output Clock Generator

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The SiT95210 clock generator offers programmable quad fractional frequency translation-based jitter cleaning with flexible input to output frequency translation options. The ultra-high performance PLLs support up to 4 differential or 8 single-ended input clocks that are common for all 4 fractional translations and provide 4 clock outputs. The clock outputs can be derived from any of the 4 PLLs in a fully flexible manner. This device is fully programmable with the I2C/SPI interface or an on-chip one-time programmable (OTP) non-volatile memory for factory pre-programmed devices.


44-pin 7x7 mm QFN Clock Generators - Network Synchronizers - Jitter Cleaners package
"Specs" "Value"
Operating Temperature Range (°C) -40 to 85
Package Type (mm²) 7x7 mm, 44-pin QFN
Number of Inputs 4
Number of Outputs 4
Input Type LVCMOS, LVDS, LVPECL, CML
Input Frequency Range 200 kHz to 2.1 GHz (Differential)
Output Type LVPECL, CML, HCSL, LVDS, LVCMOS
Output Frequency Range 0.5 Hz to 2.94912 GHz (Differential)
Number of PLL/Clock Domains 4 PLL
Phase Jitter (rms) 85 fs typ.; 70 fs typ. (with MEMS oscillator)
Repeatable Input-Output Delay ±225 ps
Frequency Control DCO 0.001 ppt (all outputs)
Phase Control DCO <1 ps (all outputs)
Internal ZDB Mode <0.5 ns input to output delay variation
Programmability NVM OTP, External EEPROM, Partial autonomous, SPI/I2C
Availability Production
  • Best-in-class 85 fs / 70 fs integrated jitter for quad PLL
  • JESD204B/C support for data converter clocks
  • External EEPROM support and on-chip OTP
  • Frequency DCO (0.001 ppt) and phase control DCOs (<1 ps resolution)
  • Internal ZDB on all PLLs with < ±500 ps input to output delay across temp
  • Independent VDDO (3.3 / 2.5 / 1.8 V)
  • Outputs can be phase aligned on independent sync pulse
SiT95210 Functional Overview
  • Ethernet
  • Optical Transport Network (OTN) Clocking for Framers, Mappers & Processors
  • Microwave Backhaul
  • 100G / 200G / 400G / 800G Ethernet
  • Wireless Networks
  • Small Cells
  • Storage, Servers & Datacenters
  • SONET/SDH Stratum 3
  • Test & Measurement
  • Broadcast Video
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