si514 Silicon Laboratories, si514 Datasheet - Page 7

• Manufacturer Part Number: si514
• Description: Any-frequency I 2c Programmable Xo 100 Khz To 250 Mhz
• Manufacturer: Silicon Laboratories

Table 5. Output Clock Jitter and Phase Noise
V
Notes:
Period Jitter (Pk-Pk) JPPKPK
Period Jitter (RMS)
Jitter Due to Power
DD
Phase Jitter (RMS)
Supply Noise
Additive RMS
1. Applies to output frequencies: 74.17582, 74.25, 75, 77.76, 100, 106.25, 125, 148.35165, 148.5, 150, 155.52, 156.25,
2. Applies to output frequencies: 100, 106.25, 125, 148.35165, 148.5, 150, 155.52, 156.25, 212.5 and 250 MHz.
3. 156.25 MHz. Increase in jitter on output clock due to sinewave noise added to VDD (2.5/3.3 V = 100 mVPP, 1.8 V =
Phase Noise,
= 2.5 or 3.3 V ±10%, T
156.25 MHz
Parameter
Spurious
212.5, 250 MHz.
50 mVPP).
3
Symbol
JPRMS
A
JPSR
SPR
φN
φJ
= –40 to +85
1.875 MHz to 20 MHz integration
LVPECL output, 156.25 MHz,
12 kHz to 20 MHz integration
o
C; Output Format = LVPECL
100 kHz sinusoidal noise
500 kHz sinusoidal noise
10 kHz sinusoidal noise
1 MHz sinusoidal noise
bandwidth
Test Condition
offset > 10 kHz
10 k samples
10 k samples
bandwidth
Preliminary Rev. 0.9
100 kHz
100 Hz
10 kHz
1 MHz
1 kHz
2
(brickwall)
2
1
1
Min
—
—
—
—
—
—
—
—
—
—
—
—
—
—
–120
–135
< 0.5
–110
–115
0.31
Typ
–85
–75
0.8
—
—
1
1
1
Max
0.55
1.2
1.0
11
—
—
—
—
—
—
—
—
—
—
Si514
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Units
dBc
ps
ps
ps
ps
ps
ps
ps
ps
7