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