FXO-PC52 Series

Page 5 of 15

© 2008 FOX ELECTRONICS | ISO9001:2000 Certified

Jitter is frequency dependent. Below are typical values at select frequencies.

Per MJSQ spec (Methodologies for Jitter and Signal Quality Specifications)

Per MJSQ spec (Methodologies for Jitter and Signal Quality Specifications)

LVPECL Phase Jitter & Time Interval Error (TIE)

Frequency

Phase Jitter

(12kHz to 20MHz)

T I E

(Sigma of Jitter Distribution)

Units

62.5 MHz

2.10

3.1

pS RMS

156.25 MHz

1.20

3.5

pS RMS

212.5 MHz

1.27

4.2

pS RMS

622.08MHz

1.68

3.7

pS RMS

LVPECL Random & Deterministic Jitter Composition

Frequency

Random (Rj)

(pS RMS)

Deterministic (Dj)

(pS P-P)

Total Jitter (Tj)

(14 x Rj) + Dj

62.5 MHz

1.35

10.5

30.5 pS

156.25 MHz

1.36

10.0

29.3 pS

212.5 MHz

1.33

11.8

30.8 pS

622.08 MHz

1.06

8.3

23.4 pS

Phase Noise

Offset Frequency

(10Hz to 40MHz)

(dBc / Hz) vs. offset frequency

2.5V Phase Noise Graph

1k

-110dBc

-120dBc

-130dBc

-150dBc

-140dBc

-160dBc

10

100

-100dBc

-60dBc

-80dBc

-90dBc

-70dBc

-40dBc

-50dBc

-30dBc

-20dBc

-10dBc

0 dBc

1M

10k

100k

10M

40M

622.08 MHz

156.25 MHz

62.5 MHz

212.5 MHz

156.25 MHz

622.08 MHz

212.5 MHz

62.5 MHz

Data Collected using HP 3048A

Four Frequencies from Jitter Tables

62.5 MHz only to 2 MHz offset Equipment Limitation