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LMK00725

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Low skew, 1-to-5, differential-to-3.3-V LVPECL fanout buffer

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Data sheet

LMK00725

ACTIVE
Data sheet Order now

Product details

Function Differential, Fanout Additive RMS jitter (typ) (fs) 43 Output frequency (max) (MHz) 650 Number of outputs 5 Output supply voltage (V) 3.3 Core supply voltage (V) 3.3 Output skew (ps) 35 Features Pin control Operating temperature range (°C) -40 to 85 Rating Catalog Output type LVPECL Input type HCSL, LVCMOS, LVDS, LVPECL, LVTTL, SSTL
Function Differential, Fanout Additive RMS jitter (typ) (fs) 43 Output frequency (max) (MHz) 650 Number of outputs 5 Output supply voltage (V) 3.3 Core supply voltage (V) 3.3 Output skew (ps) 35 Features Pin control Operating temperature range (°C) -40 to 85 Rating Catalog Output type LVPECL Input type HCSL, LVCMOS, LVDS, LVPECL, LVTTL, SSTL
TSSOP (PW) 20 41.6 mm² 6.5 x 6.4
  • Five 3.3V Differential LVPECL Outputs
    • Additive Jitter: 43 fs RMS (typ) @ 312.5 MHz
    • Noise Floor (≥1 MHz offset):
      –158 dBc/Hz (typ) @ 312.5 MHz
    • Output Frequency: 650 MHz (max)
    • Output Skew: 35 ps (max)
    • Part-to-Part Skew: 100 ps (max)
    • Propagation Delay: 0.37 ns (max)
  • Two Differential Input Pairs (pin-selectable)
    • CLKx, nCLK Input Pairs can accept LVPECL,
      LVDS, HCSL, SSTL, LVHSTL, or Single-Ended
      Signals
  • Synchronous Clock Enable
  • Power Supply: 3.3V ±5%
  • Package: 20-Lead TSSOP
  • Industrial Temperature Range: –40°C to +85°C
  • Five 3.3V Differential LVPECL Outputs
    • Additive Jitter: 43 fs RMS (typ) @ 312.5 MHz
    • Noise Floor (≥1 MHz offset):
      –158 dBc/Hz (typ) @ 312.5 MHz
    • Output Frequency: 650 MHz (max)
    • Output Skew: 35 ps (max)
    • Part-to-Part Skew: 100 ps (max)
    • Propagation Delay: 0.37 ns (max)
  • Two Differential Input Pairs (pin-selectable)
    • CLKx, nCLK Input Pairs can accept LVPECL,
      LVDS, HCSL, SSTL, LVHSTL, or Single-Ended
      Signals
  • Synchronous Clock Enable
  • Power Supply: 3.3V ±5%
  • Package: 20-Lead TSSOP
  • Industrial Temperature Range: –40°C to +85°C

The LMK00725 is a low skew, high-performance clock fanout buffer which can distribute up to five 3.3V LVPECL outputs from one of two inputs, which can accept differential or single-ended inputs. The clock enable input is synchronized internally to eliminate runt or glitch pulses on the outputs when the clock enable pin is asserted or de-asserted. The low additive jitter and phase noise floor and ensured output and part-to-part skew characteristics make the LMK00725 ideal for applications demanding high performance and repeatability.

The LMK00725 is a low skew, high-performance clock fanout buffer which can distribute up to five 3.3V LVPECL outputs from one of two inputs, which can accept differential or single-ended inputs. The clock enable input is synchronized internally to eliminate runt or glitch pulses on the outputs when the clock enable pin is asserted or de-asserted. The low additive jitter and phase noise floor and ensured output and part-to-part skew characteristics make the LMK00725 ideal for applications demanding high performance and repeatability.
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Type Title Date
* Data sheet LMK00725 Low Skew, 1-to-5, Differential-to-3.3V LVPECL Fanout Buf datasheet (Rev. A) 30 Oct 2013
EVM User's guide LMK00725EVM User’s Guide 06 Sep 2013

Design & development

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Evaluation board

LMK00725EVM — LMK00725 evaluation module

The LMK00725 is a low skew, high performance clock fanout buffer, which distributes up to five 3.3V LVPECL outputs. The clocks are derived from one of two selectable inputs, which can accept differential or single-ended input signals.


This evaluation module (EVM) is designed to demonstrate the (...)

User guide: PDF
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LMK00725 IBIS Model

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