PL602041_14 Datasheet, PDF (4/9 Pages) Micrel Semiconductor – ClockWorks™ PCIe Quad Outputs Ultra-Low Jitter, HCSL Frequency Synthesizer

Micrel, Inc.
Crystal Characteristics
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitor, C0
Correlation Drive Level
Condition
10pF load capacitance
PL602041
Min. Typ.
Max.
Units
Fundamental, Parallel Resonant
25
MHz
50
Ω
1
5
pF
10
100
W
AC Electrical Characteristics^{(6, 7)}
VDD = VDDO1/2 = 3.3V 5% or 2.5V 5%
VDD = 3.3V 5%, VDDO1/2 = 3.3V 5% or 2.5V 5%
TA = 40C to 85C. RL = 50Ω to VSS
Symbol Parameter
Condition
Min. Typ.
Max.
Units
FOUT
Output Frequency
25,
100,
125,
MHz
200
FREF
TR/TF
ODC
Crystal Input Frequency
HCSL Output Rise/Fall Time
Output Duty Cycle
20% – 80%
25
150 300
450
48
50
52
MHz
ps
%
TSKEW
Output-to-Output Skew
Note 7
45
ps
TLOCK
PLL Lock Time
20
ms
100MHz
TJIT()
RMS Phase Jitter⁽⁸⁾
Integration Range (1.875MHz–20MHz)
105
fs
Integration Range (12kHz–20MHz)
250
Notes:
7. Defined as skew between outputs at the same supply voltage and with equal load conditions; measured at the output differential crossing points.
8. Measured using 25MHz crystal as the input reference source. If using an external reference input, use a low phase noise source. With an external
reference, the phase noise will follow the input source phase noise up to about 1MHz.
Truth Tables
S1
S0
0
0
0
1
1
0
1
1
OUTPUT
25MHz
100MHz
125MHz
200MHz
January 28, 2014
4
Revision 1.3
[e-mail] or [phone]