Oscillators for IEEE 1588 Protocol Applications

Oscillator Requirements for IEEE 1588

Generally, for any IEEE 1588 applications, key oscillator parameters are:

  • Standard frequency stability (Frequency vs. Temperature and Aging)
  • Phase Noise and Jitter
  • Short- and medium-term stability (ADEV or MTIE/TDEV).
  • In some less sync constrained IEEE 1588 applications, the standard Ethernet type XO with ±20ppm frequency stability is generally sufficient
  • More sync constrained IEEE 1588 applications such as Telecom, Audio and video networks requires oscillators that meet specific short and medium term stability
  • Telecommunication wire line applications requirements are defined by industry synchronization standards such as:
        • Telcordia GR-1244, GR-253,
        • ITU-T G.812/G.813,
        • ITU-T G.8261/G.826
  • Telecommunication wireless applications requirements are defined by system requirements such as:
        • LTE frequency accuracy 50ppb, time accuracy 3-10µs
        • WiMAX frequency accuracy 50ppb, time accuracy 5-25µs
        • Audio and Video has to conform with IEEE 802.1AS-2011

OCXOs – IEEE 1588

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Product Series
ECAD
Datasheet
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Frequency (MHz)
Size (mm)
Output
RoHS
REACH
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10~50
14.9 x 9.7
CLIPPED SINE, CMOS
5~100
20.8 x 13.2
CLIPPED SINE, CMOS, TTL
1~160
36.1 x 27.2
CLIPPED SINE, CMOS, TTL
1~160
50.8 x 50.5
CLIPPED SINE, CMOS, TTL
5~100
25.4 x 25.4
CLIPPED SINE, CMOS, TTL

TCXOs – IEEE 1588

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Product Series
ECAD
Datasheet
Image
Frequency (MHz)
Size (mm)
Output
Supply Voltage (V)
RoHS
REACH
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10~40
5 x 3.2
CLIPPED SINE
3.3, 5
10~40
7 x 5
CLIPPED SINE
3.3, 5
10~40
5 x 3.2
CLIPPED SINE
3.3, 5
10~40
7 x 5
CLIPPED SINE
3.3, 5