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SM802121UMG 数据表(PDF) 6 Page - Micrel Semiconductor

部件名 SM802121UMG
功能描述  ClockWorks10GbE (156.25MHz), Ultra-Low Jitter, LVPECL Frequency Synthesizer
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制造商  MICREL [Micrel Semiconductor]
网页  http://www.micrel.com
标志 MICREL - Micrel Semiconductor

SM802121UMG 数据表(HTML) 6 Page - Micrel Semiconductor

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Micrel, Inc.
SM802121
January 2012
6
M9999-011212-A
hbwhelp@micrel.com or (408) 955-1690
AC Electrical Characteristics
(4, 5)
VDD = VDDO = 3.3V 5% or 2.5V 5%
VDD = 3.3V 5%, VDDO= 3.3V 5% or 2.5V 5%
TA = 40C to 85C. RL = 50Ω to VDDO  2V
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
FOUT
Output Frequency
156.25
MHz
FREF
Reference Input Frequency
25
MHz
TR/TF
LVPECL Output Rise/Fall Time
20%
 80%
80
175
350
ps
ODC
Output Duty Cycle
48
50
52
%
TLOCK
PLL Lock Time
20
ms
Tjit()
RMS Phase Jitter
(6)
156.25MHz
Integration Range (1.875MHz
 20MHz)
Integration Range (12kHz
 20MHz)
110
250
fs
Spurious Noise Components
6.25MHz
75
dBc
Notes:
5.
All phase-noise measurements were taken with an Agilent 5052B phase-noise system.
6.
Measured using a 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 offset.


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