Preliminary Information
M675
nFOUT
FOUT
GND
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
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
).
P
IN
A
SSIGNMENT
(5 x 7.5mm SMT)
VCC
6
5
M675
M675
( Top Vi ew)
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
Phase
Shifter
nFOUT
VIN
CLK_EN
Figure 2: Block Diagram
M675 Datasheet Rev 0.5
M675 Voltage Controlled SAW Oscillator
CLK_EN
FOUT
I n t e g r a t e d D e v i c e Te c h n o l o g y, I n c .
●
C o m m u n i c a t i o n M o d u l e s
●
w w w. i d t . c o m
●
t e l ( 5 0 8 ) 8 5 2 - 5 4 0 0
3
4
Revised 29Jul2009
M675
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Preliminary Information
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
Internal pull-up resistor
1
Frequency control input.
Clock enable:
Logic
1
enables normal operation
.
Logic
0
stops the output clock;
nFOUT
is held high,
FOUT
is held low.
Power supply ground connection.
Clock output pair. Differential LVPECL.
Power supply connection, connect to +
3.3
V.
Table 2: Pin Descriptions
Note 1: See “Clock Enable Pull-up” in Table 5 (DC Characteristics for M675-01 on pg. 3) and Table 7 (DC Characteristics for M675-02 on pg.
4).
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
4.6
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 are 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
-
40
+
85
C
Table 4: Recommended Conditions of Operation
M675 Datasheet Rev 0.5
2 of 6
Revised 29Jul2009
I n t e g r a t e d D e v i c e Te c h n o l o g y, I n c .
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C o m m u n i c a t i o n M o d u l e s
●
w w w. i d t . c o m
●
t e l ( 5 0 8 ) 8 5 2 - 5 4 0 0
M675
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Preliminary Information
E
LECTRICAL
S
PECIFICATIONS FOR
M675-01
DC Characteristics for M675-01
Unless stated otherwise, V
CC
= 3.3 Volts + 10%, T
A
= 0 to 85
o
C, VCSO Freq.s = 155.52 MHz, Outputs terminated into 180Ω to ground
Symbol Parameter
Pin
VCC
Min
2.97
Typ
3.3
85
Max
3.63
125
3.3
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
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
2
Output Current
V
mA
V
kΩ
V
V
µA
µA
VIN
0
100
2
Clock Enable V
IH
Pull-up
1
V
IL
I
IH
I
IL
R
pullup
Differential
Outputs
V
OH
V
OL
V
P
-
P
I
OUT
V
cc
+
0.3
0.8
-
0.3
CLK_EN
5
-1
50
51
V
cc
-
0.98
kΩ
V
cc
-
0.75
V
V
cc
-
1.63
V
FOUT, nFOUT
V
cc
-
1.95
0.450
0.625
0.85
20
V
P
-
P
mA
Note 1: Internally pulled up to Logic 1 (normal operation) if left unselected.
Note 2: Single-ended measurement. See Figure 3, Output Rise and Fall Time, on pg. 5.
Table 5: DC Characteristics for M675-01
AC Characteristics for M675-01
Unless stated otherwise, V
CC
= 3.3 Volts + 10%, T
A
= 0 to 85
o
C, VCSO Freq. = 155.52 MHz, Outputs terminated into 180Ω to ground
Symbol Parameter
Min
VIN
125
Typ
500
Max
Unit
Notes
Control Voltage V
IN
Output
F
OUT
APR
f
STAB
L
IN
K
VCO
Φ
n
Modulation Bandwidth
kHz
175
Output Center Frequency Range
M675-01
Absolute (Guaranteed) Pull-Range
1
Frequency Stability
Tuning Linearity
VCO Gain
Non-harmonic Spurious
SSB (single sideband)
Phase Noise, offset
from carrier
100Hz Offset
1kHz Offset
10kHz Offset
100kHz Offset
1MHz Offset
MHz
ppm
ppm p-p
At any givin V
IN
%
V
IN
=
0.3
to
3.0
V
Best fit straight line
±
100
100
6
400
-50
-77
-52
-80
-112
-136
-146
0.36
0.50
45
275
275
55
425
425
ppm/V
V
IN
=
0.3
to
3.0
V
dBc
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps rms
ps rms
%
ps
ps
20
% to
80
%
20
% to
80
%
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: Also fully meets ±50 ppm minimum pull-range specification that is commonly required.
Note 2: See Parameter Measurement Information on pg. 5.
Table 6: AC Characteristics for M675-01
M675 Datasheet Rev 0.5
3 of 6
Revised 29Jul2009
I n t e g r a t e d D e v i c e Te c h n o l o g y, I n c .
●
C o m m u n i c a t i o n M o d u l e s
●
w w w. i d t . c o m
●
t e l ( 5 0 8 ) 8 5 2 - 5 4 0 0
M675
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Preliminary Information
E
LECTRICAL
S
PECIFICATIONS FOR
M675-02
DC Characteristics for M675-02
Unless stated otherwise, V
CC
= 3.3 Volts + 10%, T
A
= 0 to 85
o
C, VCSO Freq. = 622.08 MHz, Outputs terminated into 180Ω to ground
Symbol Parameter
Pin
VCC
Min
2.97
Typ
3.3
85
Max
3.63
125
3.3
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
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
2
Output Current
V
mA
V
kΩ
V
V
µA
µA
VIN
0
100
2
Clock Enable V
IH
Pull-up
1
V
IL
I
IH
I
IL
R
pullup
Differential
Outputs
V
OH
V
OL
V
P
-
P
I
OUT
V
cc
+
0.3
0.8
-
0.3
CLK_EN
5
-1
50
51
V
cc
-
0.98
kΩ
V
cc
-
0.75
V
V
cc
-
1.63
V
FOUT, nFOUT
V
cc
-
1.95
0.450
0.625
0.85
20
V
P
-
P
mA
Note 1: Internally pulled up to Logic 1 (normal operation) if left unselected.
Note 2: Single-ended measurement. See Figure 3, Output Rise and Fall Time, on pg. 5.
Table 7: DC Characteristics for M675-02
AC Characteristics for M675-02
Unless stated otherwise, V
CC
= 3.3 Volts + 10%, T
A
= 0 to 85
o
C, VCSO Freq. = 622.08 MHz, Outputs terminated into 180Ω to ground
Symbol Parameter
Min
VIN
500
Typ
500
Max
Unit
Notes
Control Voltage V
IN
Output
F
OUT
APR
f
STAB
L
IN
K
VCO
Φ
n
Modulation Bandwidth
kHz
700
Output Center Frequency Range
M675-02
Absolute (Guaranteed) Pull-Range
1
Frequency Stability
Tuning Linearity
VCO Gain
Non-harmonic Spurious
SSB (single sideband)
Phase Noise, offset
from carrier
100Hz Offset
1kHz Offset
10kHz Offset
100kHz Offset
1MHz Offset
MHz
ppm
ppm p-p
At any givin V
IN
%
V
IN
=
0.3
to
3.0
V
Best fit straight line
±
100
100
6
400
-50
-77
-48
-75
-99
-124
-142
0.30
0.18
45
275
275
55
400
400
ppm/V
V
IN
=
0.3
to
3.0
V
dBc
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps rms
ps rms
%
ps
ps
20
% to
80
%
20
% to
80
%
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: Also fully meets ±50 ppm minimum pull-range specification that is commonly required.
Note 2: See Parameter Measurement Information on pg. 5.
Table 8: AC Characteristics for M675-02
M675 Datasheet Rev 0.5
4 of 6
Revised 29Jul2009
I n t e g r a t e d D e v i c e Te c h n o l o g y, I n c .
●
C o m m u n i c a t i o n M o d u l e s
●
w w w. i d t . c o m
●
t e l ( 5 0 8 ) 8 5 2 - 5 4 0 0
M675
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Preliminary Information
P
ARAMETER
M
EASUREMENT
I
NFORMATION
Output Rise and Fall Time
80%
Clock
Outputs
20%
t
R
80%
V
P-P
20%
t
F
FOUT
t
PW
(Output Pulse Width)
t
PERIOD
odc =
t
PW
t
PERIOD
Output Duty Cycle
nFOUT
Figure 3: Output Rise and Fall Time
Figure 4: Output Duty Cycle
D
EVICE
P
ACKAGE
-
5 x 7.5mm SMT (Surface Mount) Package
Mechanical Dimensions:
M675
-02-AA
Dimensions are in mm;
dimensions in [ ] are in inches
Unless otherwise specified, all
dimensions are
±0.13
[0.005]
Figure 5: Device Package - 5 x 7.5mm SMT (Surface Mount) Package
M675 Datasheet Rev 0.5
5 of 6
Revised 29Jul2009
I n t e g r a t e d D e v i c e Te c h n o l o g y, I n c .
●
C o m m u n i c a t i o n M o d u l e s
●
w w w. i d t . c o m
●
t e l ( 5 0 8 ) 8 5 2 - 5 4 0 0
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