SI5321 Datasheet, PDF (12/34 Pages) List of Unclassifed Manufacturers – SONET/SDH PRECISION CLOCK MULTIPLIER IC

Si5321
Table 4. AC Characteristics (PLL Performance Characteristics) (Continued)
(V_DD33 = 3.3 V ±5%, TA = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min Typ Max Unit
Wander/Jitter Transfer Peaking
J_P
Wander/Jitter at 3200 Hz Bandwidth
(BWSEL[1:0] = 00 and BWBOOST= 0; FXDDELAY = 1)
Jitter Tolerance (see Figure 7)
J_TOL(PP)
< 3200 Hz
f = 32 Hz
f = 320 Hz
— 0.05 0.1 dB
1000 —
100 —
— ns
— ns
f = 3200 Hz
10 — — ns
CLKOUT RMS Jitter Generation
FEC[2:0] = 000
J_GEN(RMS)
12 kHz to 20 MHz
50 kHz to 80 MHz
— 0.9 1.1 ps
— 0.3 0.4 ps
CLKOUT RMS Jitter Generation
J_GEN(RMS)
FEC[2:0] = 001, 010, 100,101, 110, 111
12 kHz to 20 MHz
50 kHz to 80 MHz
— 0.85 1.1 ps
— 0.3 0.49 ps
CLKOUT Peak-Peak Jitter Generation
FEC[2:0] = 000
J_GEN(PP)
12 kHz to 20 MHz
50 kHz to 80 MHz
— 7.1 10.0 ps
— 3.2 5.0 ps
CLKOUT Peak-Peak Jitter Generation J_GEN(PP)
FEC[2:0] = 001, 010, 100,101, 110, 111
12 kHz to 20 MHz
50 kHz to 80 MHz
— 6.6 11.0 ps
— 3.2 5.5 ps
Jitter Transfer Bandwidth (see Figure 6)
F_BW
Wander/Jitter Transfer Peaking
J_P
Wander/Jitter at 6400 Hz Bandwidth
(BWSEL[1:0] = 00 and BWBOOST = 1; FXDDELAY = 1)
Jitter Tolerance (see Figure 7)
BW = 3200 Hz
< 3200 Hz
f = 64 Hz
— 3200 — Hz
— 0.05 0.1 dB
500 — — ns
f = 640 Hz
50 — — ns
f = 6400 Hz
5
— — ns
CLKOUT RMS Jitter Generation
FEC[2:0] = 000
J_GEN(RMS)
12 kHz to 20 MHz
50 kHz to 80 MHz
— 0.75 0.95 ps
— 0.27 0.35 ps
CLKOUT Peak-Peak Jitter Generation
FEC[2:0] = 000
J_GEN(PP)
12 kHz to 20 MHz
50 kHz to 80 MHz
— 6.1 10.0 ps
— 3.1 5.0 ps
Jitter Transfer Bandwidth (see Figure 6)
F_BW
BW = 6400 Hz
— 6400 — Hz
Wander/Jitter Transfer Peaking
J_P
< 6400 Hz
— 0.05 0.1 dB
Notes:
1. Higher PLL bandwidth settings provide smaller clock output wander with temperature gradient.
2. For reliable device operation, temperature gradients should be limited to 10 °C/min.
3. Telcordia GR-1244-CORE requirements specify maximum phase transient slope during clock rearrangement in terms
of nanoseconds per millisecond. The equivalent ps/s unit is used here since the maximum phase transient magnitude
for the Si5321 (tPT_MTIE) never reaches one nanosecond.
12
Rev. 2.5