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.
Communications Modules
●
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tel (508) 852-5400
Integrated
Circuit
Systems, Inc.
M670
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Product Data Sheet
P
IN
D
ESCRIPTIONS
Number
1
2
3
4
5
6
Name
VIN
CLK_EN
GND
FOUT
nFOUT
VCC
I/O
Configuration
Description
Input
Input
Ground
Output
Power
No internal terminator
Tuning control voltage.
Clock enable:
Logic
1
enables normal operation
.
Logic
0
stops the output clock;
nFOUT
is held high,
FOUT
is held low.
Power supply ground connections.
Clock output pair. Differential LVPECL.
Power supply connection, connect to +
3.3
V.
Table 2: Pin Descriptions
A
BSOLUTE
M
AXIMUM
R
ATINGS1
Symbol Parameter
Rating
Unit
V
I
V
O
V
CC
T
S
Inputs
Outputs
Power Supply Voltage
Storage Temperature
-
0.5
to V
CC
+
0.5
-
0.5
to V
CC
+
0.5
3.63
V
V
V
o
C
-
55
to +
125
Table 3: Absolute Maximum Ratings
Note 1:Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the
device. These ratings ard stress specifications only. Functional operation of product at these conditions
or any conditions beyond those listed in
Recommended Conditions of Operation, DC Characteristics,
or
AC Characteristics
is not implied. Exposure to absolute maximum rating conditions for extended periods
may affect product reliability.
R
ECOMMENDED
C
ONDITIONS OF
O
PERATION
Symbol Parameter
Min
2.97
Typ
3.3
25
Max
3.63
Unit
V
CC
T
A
Positive Supply Voltage
Ambient Operating Temperature
V
o
C
-
40
+
85
Table 4: Recommended Conditions of Operation
M670 Datasheet Rev 12.1
Integrated Circuit Systems, Inc.
●
2 of 6
Communications Modules
●
Revised 09Apr2003
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tel (508) 852-5400
Integrated
Circuit
Systems, Inc.
M670
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Product Data Sheet
E
LECTRICAL
S
PECIFICATIONS
DC Characteristics
Unless stated otherwise, V
CC
= 3.3 Volts + 10%, T
A
= 0 to 85
o
C, VCSO Frequency =622-695MHz, Outputs terminated into 180Ω to ground
Symbol Parameter
Pin
VCC
Min
2.97
Typ
3.3
80
Max
3.63
100
V
cc
Unit
Power Supply V
CC
I
CC
Control
Voltage
V
IN
Positive Supply Voltage
Power Supply Current
Input Control Voltage Range
V
IN
Input Impedence
V
IN
Modulation Bandwidth
V
mA
V
kΩ
kHz
0
VIN
100
500
2
Clock Enable
Pull-up
V
IH
V
IL
I
IH
I
IL
R
pullup
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
Internal Pull-up Resistor
Output High Voltage
Output Low Voltage
Peak to Peak Output Voltage
Output Current
FOUT, nFOUT
CLK_EN
V
cc
+
0.3
0.8
V
V
µA
µA
-
0.3
5
-1
50
51
V
cc
-
0.98
V
cc
-
1.95
0.4
0.6
V
cc
-
0.75
V
cc
-
1.63
0.85
20
kΩ
V
V
V
P
-
P
mA
Differential
Outputs
V
OH
V
OL
V
P
-
P
I
OUT
Table 5: DC Characteristics
AC Characteristics
Unless stated otherwise, V
CC
= 3.3 Volts + 10%, T
A
= 0 to 85
o
C, VCSO Frequency =622-695MHz, Outputs terminated into 180Ω to ground
Symbol Parameter
Min
155
Typ
Max
700
Unit
Notes
Frequency
F
OUT
APR
f
STAB
L
IN
K
VCO
Output Center Frequency Range
Absolute Pull-Range
1
Frequency Stability
Tuning Linearity
VCO Gain
Non-harmonic Spurious
@
622.08
MHz
MHz
ppm
ppm p-p
%
ppm/V
dBc
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps rms
ps rms
%
ps
ps
20
% to
80
%
20
% to
80
%
Table 6: AC Characteristics
±
50
110
6
265
-50
100Hz Offset
1kHz Offset
10kHz Offset
100kHz Offset
-70
-43
-70
-98
-124
0.36
0.19
45
300
300
55
400
400
V
IN
=
0.3
to
3.0
V
Best fit straight line
Outputs
Φ
n
SSB Phase Noise
offset from carrier
J(t)
odc
t
R
t
F
Jitter (rms)
Output Duty Cycle
2
12kHz to 20MHz
50kHz to 80MHz
Output Rise Time
2
for
FOUT, nFOUT
Output Fall Time
2
for
FOUT, nFOUT
Note 1: Consult ICS for availability of other APRs.
Note 2: See
Parameter Measurement Information
on
pg. 4.
M670 Datasheet Rev 12.1
Integrated Circuit Systems, Inc.
●
3 of 6
Communications Modules
●
Revised 09Apr2003
w w w. i c s t . c o m
●
tel (508) 852-5400
Integrated
Circuit
Systems, Inc.
M670
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Product Data Sheet
P
ARAMETER
M
EASUREMENT
I
NFORMATION
Output Rise and Fall Time
80%
Clock
Outputs
20%
t
R
80%
V
SWING
20%
t
F
Output Duty Cycle
nFOUT
FOUT
t
PW
(Output Pulse Width)
t
PERIOD
odc =
t
PW
t
PERIOD
Figure 3: Output Rise and Fall Time
Figure 4: Output Duty Cycle
T
EST
D
ATA
Broadband Jitter
Output Waveform
Figure 5: Broadband Jitter
Figure 7: Output Waveform
Linearity
Phase Noise
Figure 8: Phase Noise
Figure 6: Linearity
M670 Datasheet Rev 12.1
Integrated Circuit Systems, Inc.
●
4 of 6
Communications Modules
●
Revised 09Apr2003
w w w. i c s t . c o m
●
tel (508) 852-5400
Integrated
Circuit
Systems, Inc.
M670
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Product Data Sheet
D
EVICE
P
ACKAGE
-
5 x 7mm SMT (Surface Mount) Package
Mechanical Dimensions:
Dimensions are in mm;
dimensions in [ ] are in inches
Unless otherwise specified, all
dimensions are
±0.13
[0.005]
Figure 9: Device Package - 5 x 7mm SMT (Surface Mount) Package
O
RDERING
I
NFORMATION
For Output Frequency (MHz)
xxx.xxxx
e.g., 622.0800
Order Part Number
Standard Output Frequencies
155.5200
622.0800
156.2500
156.8324
161.1328
166.6286
167.2820
167.3280
167.3316
167.7097
168.0400
172.6423
173.3708
625.0000
627.3296
644.5313
666.5143
669.1281
669.3120
669.3265
670.8386
672.1600
690.5692
693.4830
M670-xxx.xxxx
M670-622.0800
Table 7: Ordering Information
Table 8: Standard Output Frequencies
Consult ICS for the availability of other VCSO frequencies.
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS)
assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would
result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial
applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary
environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any
circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or
critical medical instruments.
M670 Datasheet Rev 12.1
Integrated Circuit Systems, Inc.
●
5 of 6
Communications Modules
●
Revised 09Apr2003
w w w. i c s t . c o m
●
tel (508) 852-5400
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