LMK01801 LMK01801 Dual Clock Distribution | TI.com

LMK01801 (ACTIVE) LMK01801 Dual Clock Distribution

LMK01801 Dual Clock Distribution - LMK01801


The LMK01801 is a very low noise solution for clocking systems that require distribution and frequency division of precision clocks.

The LMK01801 features extremely low residual noise, frequency division, digital and analog delay adjustments, and fourteen (14) programmable differential outputs: LVPECL, LVDS and LVCMOS (2 outputs per differential output).

The LMK01801 features two independent inputs that can be driven differentially (LVDS, LVPECL) or in single-ended mode (LVCMOS, RF Sinewave). The first input drives output Bank A consisting of eight (8) outputs. The second input drives output Bank B consisting of six (6) outputs.


  • Pin Control Mode or MICROWIRE (SPI)
  • Input and Output Frequency Range 1 kHz to 3.1 GHz
  • Separate Input for Clock Output Banks A & B.
  • 14 Differential Clock Outputs in Two Banks (A & B)
    • Output Bank A
      • 8 Differential, Programmable Outputs (Up to 8 as LVCMOS)
      • Divider Values of 1 to 8, Even and Odd.
    • Output Bank B
      • 6 Differential Outputs (or up to 12 as LVCMOS)
      • Divides Values of 1 to 1045 or 1 to 8, Even and Odd
      • Analog and Digital Delays
  • 50% Duty Cycle on All Outputs for All Divides
  • Separate Synchronization of Bank A and B.
  • RMS Additive Jitter 50 fs at 800 MHz
    • 50 fs RMS Additive Jitter (12 kHz to 20 MHz)
  • Industrial Temperature Range: -40 to 85 °C
  • 3.15 V to 3.45 V Operation

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Design with LMK01801

Input Frequency Output Frequency
 MHz  MHz
  Number of Outputs
  Output Format


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Part number Order Additive RMS jitter (Typ) (fs) Output frequency (Max) (MHz) Input level Number of outputs Output level VCC (V) VCC out (V) Input frequency (Max) (MHz) Operating temperature range (C)
LMK01801 Order now 50     3100     LVDS     12     LVPECL
3.3     3.3     3100     -40 to 85