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M660 Datasheet(PDF) 1 Page - Integrated Circuit Systems

Part No. M660
Description  DUAL SAW, SELECTABLE FREQUENCY VCSO
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Maker  ICST [Integrated Circuit Systems]
Homepage  http://www.icst.com
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M660 Datasheet(HTML) 1 Page - Integrated Circuit Systems

   
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M660 PB Rev 2.1
Revised 12Nov2003
Integ r ated Circuit Systems , Inc. ● Comm unications Modules ● www.icst.com ● tel (508) 852-5400
DUAL SAW, SELECTABLE FREQUENCY VCSO
Integrated
Circuit
Systems, Inc.
Product Br ief
M660
GENERAL DESCRIPTION
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).
FEATURES
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
PIN ASSIGNMENT (9 x 14 mm SMT)
BLOCK DIAGRAM
Sample of Available Output Frequencies
VCSO Center Frequency1 (MHz)
1. Specify VCSO center frequency at time of order
Applications
622.0800
SONET/SDH
625.0000
Gigabit Ethernet
644.5313
Gigabit Ethernet FEC
669.3266
SONET/SDH FEC
M660
(T o p Vi ew )
12
3
4
5
6
F_SEL
VIN
FOUT
nFOUT
SAW Delay Line
Phase
Shifter
SAW Delay Line
Phase
Shifter
M660
VCSO
VCSO
M660 Dual SAW, Selectable Frequency VCSO


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