M660 Integrated Circuit Systems, M660 Datasheet
M660
Manufacturer Part Number
M660
Description
DUAL SAW / SELECTABLE FREQUENCY VCSO
Manufacturer
Integrated Circuit Systems
Datasheet
1.M660.pdf
(1 pages)
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G
The M660-01 is a dual SAW, selectable frequency
VCSO for low-jitter clock generation. An integrated
SAW (surface acoustic wave) delay line implements
the high-Q VCO (voltage controlled oscillator) function,
which results in low output phase noise and very low
jitter. The M660-01 is available in a range of center
frequencies from 125 to 175MHz. The M660-02 is
available in a range of center frequencies from 500 to
700MHz. Minimum pull-range is +50 ppm (wider
pull-range is available). The M660 is well suited for
phase-locked loop implementations, clock and data
recovery circuits, and other timing applications in
telecom and optical fiber networking systems
(e.g., OC-48, OC-192).
F
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B
M660 PB Rev 2.1
I n t e g r a t e d C i r c u i t S y s t e m s , I n c .
EATURES
M660-01 output frequencies from 125 to 175 MHz
M660-02 output frequencies from 500 to 700 MHz
(Specify center frequency at time of order)
Two integrated SAW devices
Selectable output frequency
Supports multi-rate optical interface requirements
Low phase jitter 0.37ps rms typical (12kHz to 20MHz)
Low phase noise -70dBc/Hz @ 1kHz offset
Differential 3.3V LVPECL output
Single 3.3V power supply
Small 9 x 14 mm SMT (surface mount) package
LOCK
ENERAL
M660 Dual SAW, Selectable Frequency VCSO
D
Integrated
Circuit
Systems, Inc.
IAGRAM
D
F_SEL
ESCRIPTION
VIN
M660
●
C o m m u n i c a t i o n s M o d u l e s
P r o d u c t B r i e f
VCSO
VCSO
SAW Delay Line
SAW Delay Line
D
Phase
Shifter
Phase
Shifter
P
Sample of Available Output Frequencies
UAL
VCSO Center Frequency
1. Specify VCSO center frequency at time of order
IN
A
SAW, S
SSIGNMENT
●
622.0800
625.0000
644.5313
669.3266
w w w. i c s t . c o m
ELECTABLE
6
1
( T o p V i e w )
(9 x 14 mm SMT)
M 6 6 0
1
(MHz)
5
2
●
F
REQUENCY
t e l ( 5 0 8 ) 8 5 2 - 5 4 0 0
4
3
Gigabit Ethernet FEC
nFOUT
FOUT
SONET/SDH FEC
Revised 12Nov2003
Gigabit Ethernet
Applications
SONET/SDH
M660
VCSO
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