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SM813XXX

Status: In Production

Features:

  • <65fs phase jitter @ 156.25MHz (1.875MHz to 20MHz)
  • <115fs phase jitter @ 156.25MHz (12KHz to 20MHz)
  • 2 high performance PLL synthesizers to generate multiple frequencies
  • Independently programmable output logic and frequency
  • Output logic: LVPECL, LVDS, HCSL, LVCMOS
  • Crystal: 31.25MHz to 156.25MHz
  • No external crystal oscillator capacitors required
  • 3.3V or 2.5V operating power supply
  • Each bank can be at different levels (4 banks of 2 outputs each)
  • On chip power supply regulation for excellent power supply noise immunity
  • Supports Commercial or Industrial temperature ranges
  • Green, RoHS, and PFOS compliant
  • Available in 48-pin 7mm × 7mm QFN package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The SM813xxx is a dual PLL clock generator that achieves ultra-low, <115fs RMS phase jitter at 12KHz to 20MHz. With 8 total outputs and dividers on each output, this
device can generate 8 different frequencies up to 850MHz. It accepts a 31.25-156.25 MHz quartz crystal input.  Each output channel is individually configurable to
LVPECL, LVDS, HCSL or LVCMOS output logic. For LVCMOS, only the true side of the channel is used. The SM813xxx is packaged in a 48 pin 7mm x 7mm QFN package.

Create an application specific part and order samples with the CLOCKWORKS CONFIGURATOR tool.

Additional Features
    • Generates up to 18 differential or single-ended frequencies
      • <65fs phase jitter @ 156.25MHz (1.875MHz to 20MHz)
      • <115fs phase jitter @ 156.25MHz (12KHz to 20MHz)
    • 2 high performance PLL synthesizers to generate multiple frequencies
    • Independently programmable output logic and frequency
    • Output logic: LVPECL, LVDS, HCSL, LVCMOS
    • Selectable input
      • Crystal: 31.25MHz to 156.25MHz
    • No external crystal oscillator capacitors required
    • 3.3V or 2.5V operating power supply
    • Separate output power supplies
      • Each bank can be at different levels (4 banks of 2 outputs each)
    • On chip power supply regulation for excellent power supply noise immunity
    • Supports Commercial or Industrial temperature ranges
    • Green, RoHS, and PFOS compliant
    • Available in 48-pin 7mm × 7mm QFN package
Parametrics
Name
Value
Product Type
Low-Jitter Clock Generators
Description
Ultra Low Jitter Clock Generator
# of Outputs
12
Voltage
2.5 - 3.3
PDB
False
OE
False
FSEL
False
CSEL
False
CLK
False
Output Logic
PECL, LVDS, HCSL, CMOS
Function
Clock Generator
Ultra Low Power
False
Output Frequency Min. (MHz)
12
Output Frequency Max. (MHz)
850

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