SNAS512K September   2011  – October 2025 LMK00301

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  8. 7 Parameter Measurement Information
    1. 7.1 Differential Voltage Measurement Terminology
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 VCC and VCCO Power Supplies
    4. 8.4 Device Functional Modes
      1. 8.4.1 Clock Inputs
      2. 8.4.2 Clock Outputs
        1. 8.4.2.1 Reference Output
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Driving the Clock Inputs
        2. 9.2.1.2 Crystal Interface
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Termination and Use of Clock Drivers
          1. 9.2.2.1.1 Termination for DC Coupled Differential Operation
          2. 9.2.2.1.2 Termination for AC Coupled Differential Operation
          3. 9.2.2.1.3 Termination for Single-Ended Operation
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
      1. 9.3.1 Power Supply Sequencing
      2. 9.3.2 Current Consumption and Power Dissipation Calculations
        1. 9.3.2.1 Power Dissipation Example #1: Separate VCC and VCCO Supplies with Unused Outputs
        2. 9.3.2.2 Power Dissipation Example #2: Worst-Case Dissipation
      3. 9.3.3 Power Supply Bypassing
        1. 9.3.3.1 Power Supply Ripple Rejection
      4. 9.3.4 Thermal Management
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

1 Features

  • 3:1 input multiplexer
    • Two universal inputs operate up to 3.1GHz and accept lvpecl, lvds, cml, sstl, hstl, hcsl, or single-ended clocks
    • One crystal input accepts 10MHz to 40Mhz crystal or single-ended clock
  • Two banks with five differential outputs each
    • LVPECL, LVDS, HCSL, or Hi-Z (selectable per bank)
    • LVPECL additive jitter with LMK03806 clock source at 156.25MHz:
      • 20 fs RMS (10kHz to 1MHz)
      • 51 fs RMS (12kHz to 20MHz)
  • Frequency range:
    • LVPECL (DC to 3100MHz)
    • LVDS (DC to 2100MHz)
    • HCSL (DC to 800MHz)
    • LVCMOS (DC to 250MHz)
  • Additive RMS Jitter after PCIe Filters:
    • Gen 7: 9.38fs (LVPECL), 10.1fs (HCSL), 12.6fs (LVDS) (maxima)
    • Gen 6: 13.4fs (LVPECL), 14.3fs (HCSL), 18.0fs (LVDS) (maxima)
    • Gen 5: 21.8fs (LVPECL), 23.6fs (HCSL), 30.3fs (LVDS) (maxima)
  • High PSRR: –65dBc (LVPECL) and –76dBc (LVDS) at 156.25MHz
  • LVCMOS output with synchronous enable input
  • Pin-controlled configuration
  • VCC core supply: 3.3V ± 5%
  • Three independent VCCO output supplies: 3.3V or 2.5V ± 5%
  • Industrial temperature range: –40°C to +85°C