Raltron Electronics

OSCILLATORS FOR IEEE – 1588 SOLUTIONS

the IEEE-1588 Telecordia GR1244 Conditions

Raltron’s Oscillators (some ex) optimized for IEEE-1588 Telecommunications Applications

ParameterTX235TX257OX1100OX2100OX3100OX4100
ApplicationStratum 3Stratum 3Stratum 3Stratum 3Stratum 3EMaster clock - PRS
Package3.2x5mm5x7mm9x14mm13x20mm36x27mm50x50mm
Frequencies(MHz)20.000, 24.576, 49.15220.000, 24.576, 49.15220.000, 24.576, 49.152, 98.30420.000, 24.576, 49.152, 98.30420.000, 24.576, 49.152, 98.30420.000, 24.576, 49.152, 98.304
Stability/Holdover≤280ppb≤280ppb≤280ppb≤280ppb≤10ppb≤0.5ppb
Jitter< 0.85ps@24.576 MHz
< 0.8ps@49.152 MHz
<0.35ps@49.152MHz<0.29ps@49.152MHz<0.29ps@49.152MHz<0.37ps@10.000MHz<0.70ps@20.000MHz
Loop BW100mHz100mHz10mHz10mHz1mHz0.5mHz

MTIE [ns]
0.20.20.20.20.20.20.20.2
33221.51.51.51
151512121010108
2020202015151512

TDEV [ns]
0.020.020.020.020.010.010.010.01
0.250.250.150.150.050.050.050.05
221.61.610.90.90.8
665543.73.63.5

MTIE and TDEV per GR-1244
CO43/CO46

    Clocks designed for packet based implementation

ParameterConditionValueUnit
Frequency245.0/50.0/98.308/125.0MHz
Package Size7.0 x 5.0mm
Output TypeLVCMOS
Supply Voltage2.5,3.3V
Operating Temperature Range-20 – 70, -40 – 85C
Stability25ppm


Jitter (12kHz to 20MHz)
@25.0 MHz0.085

ps
@50.0 MHz0.08
@125.0 MHz0.05
TX257

    TCXO or VCTCXO designed for use in Stratum 3 telecom and PTP/IEEE-1588 applications as reference oscillator source

ParameterConditionValueUnit
Frequency10.0 – 50.0MHz
Package Size7.0 x 5.0mm
Output TypeLVCMOS or Clipped Sine-wave
Supply Voltage3.3, 5.0V
Operating Temperature Range-20 – 70, -40 – 85C
Frequency Stability±0.28ppm
Jitter (12kHz to 20MHz)@24.576 MHz< 0.39ps
@49.152 MHz< 0.35
Wander as per GR-1244 (100 MHz loop BW)
1s10s100s1000s
MTIE (ns)0.241520
TDEV (ns)0.020.326
TX235

    Precision miniature TCXO or VCTCXO that meets Stratum 3 wander requirements, designed for use in telecom and PTP/IEEE-1588 applications

ParameterConditionValueUnit
Frequency10.0 to 50MHz
Package Size5.0 x 3.2mm
Output TypeLVCMOS or Clipped Sine-wave
Supply Voltage3.3V
Operating Temperature Range-20 – 70, -40 – 85C
Frequency Stability±0.30ppm
Jitter (12kHz to 20MHz)@24.576 MHz< 0.85ps
@49.152 MHz< 0.8
Wander as per GR-1244 (100 MHz loop BW)
1s10s100s1000s
MTIE (ns)0.241520
TDEV (ns)0.020.326
OX2100

    is a small footprint OCXO or OCVCXO that can be used as frequency standard in PTP/IEEE-1588
    Ver. 2.0 as TCXO replacement with better short term stability.as reference oscillator source

ParameterConditionValueUnit
Frequency10.0,  12.8, 19.44, 20.0, 25.0, 38.88, 49.152MHz
Package Size4-pin DIP
Output TypeCMOS
Supply Voltage3.3, 5.0V
Operating Temperature Range0 – 70,  -20 – 75, -40 – 85C
Frequency Stability±50, ±100ppm
Jitter (12kHz to 20MHz)@49.152 MHz0.29ps
Wander as per GR-1244 (100 MHz loop BW)
1s10s100s1000s
MTIE (ns)0.241220
TDEV (ns)0.020.151.65
OX3100

    OX3100 is a Stratum 3E Euro package OCXO or OCVCXO that can be used as frequency standard in PTP/IEEE-1588
    Ver. 2.0 applications requiring tight stability using a low noise SC-cut crystal oscillator

ParameterConditionValueUnit
Frequency10.0,  12.8, 19.44, 20.0, 25.0, 38.88MHz
Package Size36x27x14mm, 5 pins(euro)
Output TypeCMOS
Supply Voltage5.0V
Operating Temperature Range0 – 70,  -20 – 75, -40 – 85C
Frequency Stability±10ppm
Jitter (12kHz to 20MHz)@49.152 MHz0.37ps
Wander as per GR-1244 (100 MHz loop BW)
1s10s100s1000s
MTIE (ns)0.21.51012
TDEV (ns)0.010.0514
OX4100

    OX4100 is a high stability Double Oven Controlled Crystal Oscillator (DOCXO) that can be used as
     frequency reference standard for PTP/IEEE-1588 Grandmaster applications.

ParameterConditionValueUnit
Frequency10.0, 12.8 , 20.0 , 38.88MHz
Package Size50.0 x 50.0 x 16.0, 5 pins
Output TypeCMOS or Sine
Supply Voltage5.0, 12.0V
Operating Temperature Range0 – 70,  -20 – 75, -40 – 85C
Frequency Stability±0.5ppm
ADEV@1 sec5.0E-11
Holdover8 hours7µs
Jitter (12kHz to 20MHz)@20.00MHz< 0.70ps
Wander as per GR-1244 (100 MHz loop BW)
1s10s100s1000s
MTIE (ns)0.21.51012
TDEV (ns)0.010.0514