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PDF M660 Data sheet ( Hoja de datos )
| Número de pieza | M660 | |
| Descripción | DUAL SAW / SELECTABLE FREQUENCY VCSO | |
| Fabricantes | Integrated Circuit Systems | |
| Logotipo |  |
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Integrated
Circuit
Systems, Inc.
Product Brief
M660
DUAL SAW, SELECTABLE FREQUENCY VCSO
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)
654
M660
(Top View)
1 23
Sample of Available Output Frequencies
VCSO Center Frequency1 (MHz)
Applications
622.0800
625.0000
644.5313
669.3266
SONET/SDH
Gigabit Ethernet
Gigabit Ethernet FEC
SONET/SDH FEC
1. Specify VCSO center frequency at time of order
BLOCK DIAGRAM
M660
SAW Delay Line
VIN
VCSO
Phase
Shifter
SAW Delay Line
FOUT
nFOUT
F_SEL
VCSO
Phase
Shifter
M660 PB Rev 2.1
Revised 12Nov2003
M660 Dual SAW, Selectable Frequency VCSO
Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400
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