1.6-GHz high performance clock buffer, divider, and distributor with 8 LVPECL outputs


Product details


Function Differential, Fanout Additive RMS jitter (Typ) (fs) 30 Output frequency (Max) (MHz) 1600 Number of outputs 8 Output supply voltage (V) 3.3 Core supply voltage (V) 3.3 Output skew (ps) 30 Features uWire Operating temperature range (C) -40 to 85 Rating Catalog Output type LVPECL Input type LVDS open-in-new Find other Clock buffers

Package | Pins | Size

WQFN (RHS) 48 49 mm² 7 x 7 open-in-new Find other Clock buffers


  • 30 fs additive jitter (100 Hz to 20 MHz)
  • Dual clock inputs
  • Programmable output channels (0 to 1600 MHz)
  • External synchronization
  • Pin compatible family of clocking devices
  • 3.15 to 3.45 V operation
  • Package: 48 pin LLP (7.0 x 7.0 x 0.8 mm)
  • Device LVDS Outputs LVPECL Outputs
    LMK01000 3 5
    LMK01010 8 0
    LMK01020 0 8

    open-in-new Find other Clock buffers


    The LMK01000 family provides an easy way to divide and distribute high performance clock signals throughout the system. These devices provide best-in-class noise performance and are designed to be pin-to-pin and footprint compatible with LMK03000/LMK02000 family of precision clock conditioners.

    The LMK01000 family features two programmable clock inputs (CLKin0 and CLKin1) that allow the user to dynamically switch between different clock domains.

    Each device features 8 clock outputs with independently programmable dividers and delay adjustments. The outputs of the device can be easily synchronized by an external pin (SYNC*).

    Target Applications

  • High performance Clock Distribution
  • Wireless Infrastructure
  • Medical Imaging
  • Wired Communications
  • Test and Measurement
  • Military / Aerospace

  • open-in-new Find other Clock buffers
    Similar products you might be interested in
    open-in-new Compare products
    Similar functionality to the compared device.
    CDCM1804 ACTIVE 1:3 LVPECL clock buffer & LVCMOS output & programmable divider 1:4 LVPECL buffer divider

    Technical documentation

    star = Top documentation for this product selected by TI
    No results found. Please clear your search and try again.
    View all 3
    Type Title Date
    * Data sheet Fam LMK01000 Fam 1.6GHz HPer Clk Buffer, Divider and Distributor datasheet (Rev. G) Oct. 15, 2009
    Application note AN-1821 CPRI Repeater System (Rev. A) Apr. 26, 2013
    Design guide Clock Conditioner Owner's Manual Nov. 10, 2006

    Design & development

    For additional terms or required resources, click any title below to view the detail page where available.

    Hardware development

    document-generic User guide

    The LMK01000 Evaluation Kit simplifies evaluation of the LMK01000 1.6 GHz High Performance Clock Buffer, Divider, and Distributor. The package consists of an Evaluation Board, Evaluation Board Instructions, and a cable for programming the device through a PC parallel port. CodeLoader 4 is the (...)

    Software development

    Clock Design Tool - Loop Filter & Device Configuration + Simulation
    CLOCKDESIGNTOOL The Clock Design Tool software helps with part selection, loop filter design and simulation of timing device solutions. When you enter desired output frequencies and a reference frequency (optional), the tool provides TI devices to meet the specified requirements, divider values and a recommended (...)
    Texas Instruments Clocks and Synthesizers (TICS) Pro Software
    TICSPRO-SW The TICS Pro software is used to program the evaluation modules (EVMs) for device numbers with these prefixes: CDC, LMK and LMX. These devices include PLLs and voltage-controlled oscillators (PLL+VCO), synthesizers and clocking devices.
    • Program EVMs through the USB2ANY Interface Adaptor or onboard USB interface.
    • Export programming configurations for use in end application.
    CodeLoader Software for device register programming
    CODELOADER The CodeLoader 4 software is used to program the LMX PLLs and LMK timing devices through either the USB or line print terminal (LPT) port of a computer. This software also provides information on how to program the device by showing the bits that are actually sent.

    Which software do I use?


    Loop (...)

    Design tools & simulation

    SNAM249.ZIP (28 KB) - IBIS Model
    PSpice® for TI design and simulation tool
    PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
    • Leverages Cadence PSpice Technology
    • Preinstalled library with a suite of digital models to enable worst-case timing analysis
    • Dynamic updates ensure you have access to most current device models
    • Optimized for simulation speed without loss of accuracy
    • Supports simultaneous analysis of multiple products
    • (...)
    DESIGN TOOL Download
    Clock tree architect programming software
    CLOCK-TREE-ARCHITECT Clock tree architect is a clock tree synthesis tool that streamlines your design process by generating clock tree solutions based on your system requirements. The tool pulls data from an extensive database of clocking products to generate a system-level multi-chip clocking solution.
    • Accepts customer specific design requirements such as input frequencies, output frequencies, clock formats and clock counts
    • Generates clock trees by taking into account a variety of advanced specifications, such as noise floor and phase determinism requirements
    • Presents clear and intuitive block (...)

    CAD/CAE symbols

    Package Pins Download
    WQFN (RHS) 48 View options

    Ordering & quality

    Information included:
    • RoHS
    • REACH
    • Device marking
    • Lead finish/Ball material
    • MSL rating/Peak reflow
    • MTBF/FIT estimates
    • Material content
    • Qualification summary
    • Ongoing reliability monitoring

    Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

    Support & training

    TI E2E™ forums with technical support from TI engineers

    Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

    If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​