SI570 Datasheet, PDF (8/26 Pages) Silicon Laboratories – ANY-RATE I2C PROGRAMMABLE XO/VCXO

Si570/Si571
Table 6. CLK± Output Phase Jitter (Si571)
Parameter
Phase Jitter (RMS)^1,2,3
for F_OUT > 500 MHz
Symbol
Test Condition
Min
φ_J Kv = 33 ppm/V
12 kHz to 20 MHz (OC-48) —
50 kHz to 80 MHz (OC-192) —
Typ
0.26
0.26
Max Units
ps
—
—
Kv = 45 ppm/V
12 kHz to 20 MHz (OC-48) —
0.27
—
50 kHz to 80 MHz (OC-192) —
0.26
—
Kv = 90 ppm/V
12 kHz to 20 MHz (OC-48) —
0.32
—
50 kHz to 80 MHz (OC-192) —
0.26
—
Kv = 135 ppm/V
12 kHz to 20 MHz (OC-48) —
0.40
—
50 kHz to 80 MHz (OC-192) —
0.27
—
Kv = 180 ppm/V
12 kHz to 20 MHz (OC-48) —
0.49
—
50 kHz to 80 MHz (OC-192) —
0.28
—
Kv = 356 ppm/V
12 kHz to 20 MHz (OC-48) —
0.87
—
50 kHz to 80 MHz (OC-192) —
0.33
—
Notes:
1. Differential Modes: LVPECL/LVDS/CML. Refer to AN255, AN256, and AN266 for further information.
2. For best jitter and phase noise performance, always choose the smallest K_V that meets the application’s minimum APR
requirements. See “AN266: VCXO Tuning Slope (K_V), Stability, and Absolute Pull Range (APR)” for more information.
3. See “AN255: Replacing 622 MHz VCSO devices with the Si550 VCXO” for comparison highlighting power supply
rejection (PSR) advantage of Si55x versus SAW-based solutions.
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Rev. 0.3