Ultra-Low Jitter Programmable Oscillator With Internal EEPROM - LMK61E0M

LMK61E0M (ACTIVE)

Ultra-Low Jitter Programmable Oscillator With Internal EEPROM

 

Description

The LMK61E0 family of ultra-low jitter PLLatinumTM programmable oscillators use fractional-N frequency synthesizers with integrated VCOs to generate commonly used reference clocks. The LMK61E0M supports 3.3-V LVCMOS outputs. The device features self start-up from on-chip EEPROM to generate a factory programmed default output frequency, or the device registers and EEPROM settings are fully programmable in-system through I2C serial interface. The device provides fine and coarse frequency margining control through I2C serial interface, making it a digitally-controlled oscillator (DCXO).

The PLL feedback divider can be updated to adjust the output frequency without spikes or glitches in steps of <1ppb using a PFD of 12.5 MHz (R divider=4, doubler disabled) for compatibility with xDSL requirements, or in steps of <5.2 ppb using a PFD of 100 MHz (R divider=1, doubler enabled) for compatibility with broadcast video requirements. The frequency margining features also facilitate system design verification tests (DVT), such as standards compliance and system timing margin testing.

Features

  • Ultra-Low Noise, High Performance
    • Jitter: 500-fs RMS Typical fOUT > 50 MHz on LMK61E0M
  • LMK61E0M Supports 3.3-V LVCMOS Output up to 200 MHz
  • Total Frequency Tolerance of ±25 ppm
  • System Level Features
    • Glitch-Less Frequency Margining: Up to ±1000 ppm From Nominal
    • Internal EEPROM: User Configurable Start-Up Settings
  • Other Features
    • Device Control: Fast Mode I2C up to 1000 kHz
    • 3.3-V Operating Voltage
    • Industrial Temperature Range (–40ºC to +85ºC)
    • 7-mm × 5-mm 8-Pin Package
  • Default Frequency: 70.656 MHz

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Parametrics Compare all products in Clock Oscillators

 
Features
Output Frequency (Max) (MHz)
Output Level
Jitter (ps)
Stability (ppm)
VCC Core (V)
Rating
Operating Temperature Range (C)
Pin/Package
LMK61E0M LMK61E2 LMK62A2-100M LMK62A2-150M LMK62A2-156M LMK62A2-200M LMK62A2-266M LMK62E0-156M LMK62E2-156M
Standard
7x5mm   
Programmable with EEPROM
7x5mm   
Standard
5x3.2mm   
Standard
5x3.2mm   
Standard
5x3.2mm   
Standard
5x3.2mm   
Standard
5x3.2mm   
Standard
5x3.2mm   
Standard
5x3.2mm   
200    1000    100    150    156.25    200    266.66    156.25    156.25   
LVCMOS    HCSL
LVDS
LVPECL   
LVDS    LVDS    LVDS    LVDS    LVDS    LVPECL    LVPECL   
0.5    0.1    0.15    0.15    0.15    0.15    0.15    0.15    0.15   
25    50    50    50    50    50    50    25    50   
3.3    3.3    3.3    3.3    3.3    3.3    3.3    3.3    3.3   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
8QFM    6QFM
8QFM   
6QFM    6QFM    6QFM    6QFM    6QFM    6QFM    6QFM