SiT92216

4 Differential and 1 LVCMOS Output Ultra-Low-Jitter, Fanout Clock Buffer

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The SiT92216 is a low-jitter fanout clock buffer with 4 differential outputs and 1 LVCMOS outputs. It is ideal for low jitter, high frequency clock/data distribution. The low impedance LVCMOS outputs are designed to drive 50 Ω series or parallel terminated transmission lines.

The buffer can use a clock input from primary or secondary clock sources, either single ended or fully differential. The selected clock is distributed to 4 differential and 1 LVCMOS output drivers.

The SiT92216 operates from a 3.3 V/2.5 V core supply and 3.3 V/2.5 V output supply. The HCSL and LVCMOS output drivers can operate at 1.8 V. The core supply and output supply are independent of each other and no supply sequencing is required.

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5x5 mm, 32-pin QFN Clock Buffer package
"Specs" "Value"
Operating Temperature Range (°C) -40 to 85
Package Type (mm²) 5x5 mm, 32-pin QFN
Buffer Type Fanout
Number of Inputs 3
Number of Outputs 4 Differential, 1 Single Ended
Input Type LVPECL, LVDS, HCSL, LVCMOS
Input Frequency Range 0 Hz to 2.1 GHz
Output Type LVPECL, LVDS, HCSL, LVCMOS
Output Frequency Range 0 Hz to 2.1 GHz
Additive Phase Jitter (rms) 50 fs
Propagation Delay, Typical 0.8 ns to 1.4 ns
Output-Output Skew, Typical 30 ps
PCIe Support Gen 1 to Gen 5
Output Enable Yes
Availability Production
  • 5x5 mm, 32-pin QFN Clock Buffer package
    enlarge

    5x5 mm, 32-pin QFN Clock Buffer package

  • Level translation with core supply voltage of 3.3 V/2.5 V and 3.3 V/2.5 V output supply for differential output drivers.
  • 1.8 V output supply support for LVCMOS and HCSL driver.
  • The inputs are selected by programming input select pins of SiT92216. The input clock receiver in SiT92216 can accept LVPECL, LVDS, LVCMOS, SSTL, HCSL and OSC waveforms.
  • Input frequencies are supported from DC to 2100 MHz are supported on primary and secondary inputs.
  • Supports PCIe Gen 1 to Gen 5.
SiT92216 Functional Overview
  • Ethernet
  • 5G Infrastructure
  • Wireless Base Stations
  • Small Cells

SiT92216 Evaluation Board HW User Manual – Configure and evaluate device performance

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