3.1-GHz Differential Clock Buffer/Level Translator - LMK00304

LMK00304 (ACTIVE)

3.1-GHz Differential Clock Buffer/Level Translator

 

Description

The LMK00304 is a 3-GHz 4-output differential fanout buffer intended for high-frequency, low-jitter clock/data distribution and level translation. The input clock can be selected from two universal inputs or one crystal input. The selected input clock is distributed to two banks of 2 differential outputs and one LVCMOS output. The differential output banks can be mutually configured as LVPECL, LVDS, or HCSL drivers, or disabled. The LVCMOS output has a synchronous enable input for runt-pulse-free operation when enabled or disabled. The LMK00304 operates from a 3.3 V core supply and 3 independent 3.3 V/2.5 V output supplies.

The LMK00304 provides high performance, versatility, and power efficiency, making it ideal for replacing fixed-output buffer devices while increasing timing margin in the system.

Features

  • 3:1 Input Multiplexer
    • Two Universal Inputs Operate up to 3.1 GHz
      and Accept LVPECL, LVDS, CML, SSTL,
      HSTL, HCSL, or Single-Ended Clocks
    • One Crystal Input Accepts a 10 to 40 MHz
      Crystal or Single-Ended Clock
  • Two Banks with 2 Differential Outputs Each
    • LVPECL, LVDS, HCSL, or Hi-Z (Selectable)
    • LVPECL Additive Jitter with LMK03806 Clock
      Source at 156.25 MHz:
      • 20 fs RMS (10 kHz to 1 MHz)
      • 51 fs RMS (12 kHz to 20 MHz)
  • High PSRR: –65 / –76 dBc (LVPECL/LVDS) at
    156.25 MHz
  • LVCMOS Output with Synchronous Enable Input
  • Pin-Controlled Configuration
  • VCC Core Supply: 3.3 V ± 5%
  • 3 Independent VCCO Output Supplies: 3.3 V/2.5 V
    ± 5%
  • Industrial Temperature Range: –40°C to +85°C
  • 32-lead WQFN (5 mm × 5 mm)

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Parametrics Compare all products in Universal (programmable)

 
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)
Rating
LMK00304 LMK00301 LMK00306 LMK00308
51    51    51    51   
3100    3100    3100    3100   
LVPECL    HCSL
LVDS
LVPECL   
CML
HCSL
HSTL
LVCMOS
LVDS
LVPECL
LVTTL
SSTL
XTAL   
CML
HCSL
HSTL
LVCMOS
LVDS
LVPECL
LVTTL
SSTL
XTAL   
5    11    7    9   
LVPECL    HCSL
LVDS
LVPECL   
HCSL
LVCMOS
LVDS
LVPECL   
HCSL
LVCMOS
LVDS
LVPECL   
3.3    3.3    3.3    3.3   
3.3
2.5   
3.3
2.5   
2.5
3.3   
2.5
3.3   
3100    3100    3100    3100   
-40 to 85    -40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog   

WEBENCH® Designer LMK00304

Frequency Number of Outputs
 MHz
Output Format