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| 844441 Datasheet, PDF (4/15 Pages) Integrated Device Technology – FemtoClock SAS/ SATA Clock Generator | |||
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Table 4D. Crystal Characteristics
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
Load Capacitance (CL)
844441 Datasheet
Test Conditions
Minimum
Typical
Fundamental
25
12
Maximum
50
7
Units
MHz
Ohm
pF
pF
AC Electrical Characteristics
Table 5. AC Characteristics, VDD = 2.5V ± 5%, TA = -40°C to 85°C
Symbol
Parameter
Test Conditions
F_SEL(1:0) = 00
fOUT
Output Frequency
F_SEL(1:0) = 01
F_SEL(1:0) = 10
F_SEL(1:0) = 11
75MHz, Integration Range:
12kHz â 20MHz
tjit(Ã)
RMS Phase Jitter
(Random); NOTE 1
100MHz, Integration Range:
12kHz â 20MHz
150MHz, Integration Range:
12kHz â 20MHz
300MHz, Integration Range:
12kHz â 20MHz
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
Minimum
100
45
Typical
75
100
150
300
1.19602
1.1936
1.22743
1.15011
Maximum
Units
MHz
MHz
MHz
MHz
ps
ps
ps
ps
400
ps
55
%
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device
is mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal
equilibrium has been reached under these conditions.
NOTE: Characterized using a 25MHz, 12pF quartz crystal.
NOTE 1: Please refer to the Phase Noise plot.
©2016 Integrated Device Technology, Inc.
4
Revison E, November 2, 2016
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