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M675-02

Description
VOLTAGE CONTROLLED SAW OSCILLATOR
CategoryPassive components   
File Size158KB,6 Pages
ManufacturerICS ( IDT )
Websitehttp://www.icst.com
Download Datasheet View All

M675-02 Overview

VOLTAGE CONTROLLED SAW OSCILLATOR

Integrated
Circuit
Systems, Inc.
Preliminary Information
M675
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
P
IN
A
SSIGNMENT
(5 x 7.5mm SMT)
nFOUT
FOUT
GND
VCC
G
ENERAL
D
ESCRIPTION
The M675 is a VCSO (Voltage Controlled SAW
Oscillator) frequency source 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 M675-01 is available in a range of center
frequencies from 125 to 175 MHz. The M675-02
provides 500 to 700 MHz. Guaranteed minimum
pull-range of
±100
ppm meets GbE requirements.
(It also fully satisfies
±50
ppm minimum pull-range
specification commonly required.) Industry-standard
Kvco (VCO Gain) provides full replacement compati-
bility. The M675 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.,
SONET/SDH
).
6
5
M675
M675
(Top View)
1
2
VIN
Figure 1: Pin Assignment
Sample of Available Output Frequencies
VCSO Center Frequencies
1
(MHz)
M675-01
M675-02
155.5200
156.2500
161.1328
167.3316
622.0800
625.0000
644.5313
669.3266
Applications
SONET/SDH
Gigabit Ethernet
Gigabit Ethernet FEC
SONET/SDH FEC
F
EATURES
Integrated SAW device
M675-01 output frequencies from 125 to 175 MHz
M675-02 output frequencies from 500 to 700 MHz
(Specify center frequency at time of order)
Industry-standard Kvco for full compatibility
Low phase jitter 0.2ps rms typical for the M675-02
(50kHz to 80MHz)
Differential 3.3V LVPECL output
Single 3.3V power supply
Small 5 x 7.5mm SMT (surface mount) package
Table 1: Sample of Available Output Frequencies
Note 1: Specify VCSO center frequencies at time of order
B
LOCK
D
IAGRAM
M675
M670
SAW Delay Line
FOUT
Phase
Shifter
nFOUT
VIN
CLK_EN
Figure 2: Block Diagram
M675 Datasheet Rev 0.4
M675 Voltage Controlled SAW Oscillator
CLK_EN
Revised 16Nov2004
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 .
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