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M670-173.3708

Description
VOLTAGE CONTROLLED SAW OSCILLATOR
CategoryPassive components   
File Size289KB,6 Pages
ManufacturerICS ( IDT )
Websitehttp://www.icst.com
Download Datasheet View All

M670-173.3708 Overview

VOLTAGE CONTROLLED SAW OSCILLATOR

Integrated
Circuit
Systems, Inc.
Product Data Sheet
M670
nFOUT
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
P
IN
A
SSIGNMENT
(5 x 7mm SMT)
FOUT
GND
VCC
G
ENERAL
D
ESCRIPTION
The M670 is a VCSO (Voltage Controlled SAW
Oscillator) frequency source for low-jitter
clock generation. Its integrated SAW
(surface acoustic wave) delay line provides
low phase jitter. The M670 is available in a
range of center frequencies. Minimum
pull-range is
±50
ppm (wider pull-range available).
The M670 is well suited for phase-locked loop
implementations, clock and data recovery circuits, and
other timing applications for the telecom and optical
fiber networking markets (e.g., OC-48, OC-192).
6
M670
(Top View)
1
2
CLK_EN
5
F
EATURES
VCSO center frequencies from 155 to 700 MHz
(Specify center frequency at time of order)
Low phase jitter 0.19ps rms typical (50kHz-80MHz)
Low phase noise -70dBc/Hz @ 1kHz offset
Differential 3.3V LVPECL output
Single 3.3V power supply
Very small 5 x 7mm SMT (surface mount) package
Figure 1: Pin Assignment
Sample of Available Output Frequencies
VCSO Center Frequency
1
(MHz)
622.0800
625.0000
644.5313
669.3265
Applications
SONET/SDH
Gigabit Ethernet
Gigabit Ethernet FEC
SONET/SDH FEC
Table 1: Sample of Available Output Frequencies
Note 1: Specify VCSO center frequency at time of order
B
LOCK
D
IAGRAM
M670
SAW Delay Line
VIN
FOUT
Phase
Shifter
nFOUT
VIN
CLK_EN
Figure 2: Block Diagram
M670 Datasheet Rev 12.1
M670 Voltage Controlled SAW Oscillator
3
4
Revised 09Apr2003
Integrated Circuit Systems, Inc.
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