SI550 SILABS, SI550 Datasheet - Page 4

• Manufacturer Part Number: SI550
• Description: VOLTAGE-CONTROLLED CRYSTAL OSCILLATOR
• Manufacturer: SILABS

Si 550
Table 4. CLK± Output Levels and Symmetry (Continued)
Table 5. CLK± Output Phase Jitter
4
Symmetry (duty cycle)
Notes:
Phase Jitter (RMS)
for F
Phase Jitter (RMS)
for F
Notes:
1. 50 Ω to V
2. R
3. C
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
3. See “AN255: Replacing 622 MHz VCSO devices with the Si550 VCXO” for comparison highlighting power supply
OUT
OUT
requirements. See “AN266: VCXO Tuning Slope (K
rejection (PSR) advantage of Si55x versus SAW-based solutions.
Parameter
term
L
> 500 MHz
of 125 to 500 MHz
= 15 pF
Parameter
= 100 Ω (differential).
DD
– 2.0 V.
1,2,3
1,2,3
Symbol
SYM
Symbol
φ
φ
J
J
LVPECL:
LVDS:
CMOS:
Kv = 45 ppm/V
Kv = 90 ppm/V
Kv = 135 ppm/V
Kv = 180 ppm/V
Kv = 45 ppm/V
Kv = 90 ppm/V
Kv = 135 ppm/V
Kv = 180 ppm/V
Test Condition
Preliminary Rev. 0.3
50 kHz to 80 MHz (OC-192)
50 kHz to 80 MHz (OC-192)
50 kHz to 80 MHz (OC-192)
50 kHz to 80 MHz (OC-192)
50 kHz to 80 MHz (OC-192)
50 kHz to 80 MHz (OC-192)
50 kHz to 80 MHz (OC-192)
50 kHz to 80 MHz (OC-192)
12 kHz to 20 MHz (OC-48)
12 kHz to 20 MHz (OC-48)
12 kHz to 20 MHz (OC-48)
12 kHz to 20 MHz (OC-48)
12 kHz to 20 MHz (OC-48)
12 kHz to 20 MHz (OC-48)
12 kHz to 20 MHz (OC-48)
12 kHz to 20 MHz (OC-48)
V
1.25 V (diff)
V
Test Condition
DD
DD
V
), Stability, and Absolute Pull Range (APR)” for more information.
/2
– 1.3 V (diff)
V
Min
45
that meets the application’s minimum APR
Min
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Typ
—
0.35
0.38
0.43
0.41
0.52
0.46
0.64
0.52
0.42
0.58
0.48
0.60
0.57
0.64
0.67
0.68
Typ
Max
55
Max
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Units
Units
%
ps
ps