M635 Datasheet Rev 7.1
Revised 10Apr2003
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 .
C o m m u n i c a t i o n s M o d u l e s
w w w. i c s t . c o m
t e l ( 5 0 8 ) 8 5 2 - 5 4 0 0
M635
D
IELECTRIC
R
ESONATOR
VCO
Integrated
Circuit
Systems, Inc.
P r e l i m i n a r y I n f o r m a t i o n
G
ENERAL
D
ESCRIPTION
The M635 Voltage Controlled Dielectric Resonator
Oscillator (VCDRO) is specifically designed for
high-speed SONET/SDH OC-192 applications and
beyond. With an available center frequency range
of 10 to 14GHz, and a tuning range of up to 40MHz,
the VCDRO can be used in both OC-192 and
OC-768 applications. The tuning range is
±1000
ppm from center frequency.
The integrated Dielectric Resonator provides this
VCO with low phase noise performance and excellent
tuning linearity. The linear tuning range makes the
M635 especially suited for phase-locked loop imple-
mentations, clock and data recovery circuits, and
other timing applications for the telecom and optical
fiber networking markets (OC-192/STM-64 with and
without Forward Error Correction - FEC).
F
EATURES
Voltage Controlled DRO center frequencies from 10 to
14 GHz (Specify center frequency at time of order)
Low phase jitter 0.05ps rms typical (50kHz to 80MHz)
Low phase noise -65dBc/Hz @ 1kHz offset
Very linear and broad tuning range of 10 to 40MHz
Ideal for high-speed fiber optic applications
Single 5V power supply
Small 1.25 x 1.5 inch SMA connector package
P
IN
A
SSIGNMENT
(1.25 x 1.5 inch SMA)
Figure 1: Pin Assignment
B
LOCK
D
IAGRAM
Figure 2: Block Diagram
Sample of Available Output Frequencies
VCDRO Center Frequency
1
(GHz)
Note 1: Specify VCDRO center frequency at time of order
Applications
10 GHz
OC-192
10.664 GHz
OC-192, OTU2 FEC
14 GHz
OC-192
Table 1: Sample of Available Output Frequencies
M635
GND
SMA Connector
RF_OUT
VIN
VCC
VIN
M635
RF
Amp
GND
RF_OUT
SIGe Bipolar
Transistor
VCC
DR
M635 Dielectric Resonator Oscillator
M635 Datasheet Rev 7.1
2 of 4
Revised 10Apr2003
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 .
C o m m u n i c a t i o n s M o d u l e s
w w w. i c s t . c o m
t e l ( 5 0 8 ) 8 5 2 - 5 4 0 0
Integrated
Circuit
Systems, Inc.
M635
D
IELECTRIC
R
ESONATOR
O
SCILLATOR
P r e l i m i n a r y I n f o r m a t i o n
P
IN
D
ESCRIPTIONS
E
LECTRICAL
S
PECIFICATIONS
Name
I/O
Description
GND
Ground
Power supply ground connections.
VCC
Power
Power supply connection, connect to +
5.0
V.
VIN
Input
Tuning Voltage
RF_OUT
Output
Clock output. SMA connector.
Table 2: Pin Descriptions
A
BSOLUTE
M
AXIMUM
R
ATINGS
1
Symbol Parameter
Rating
Unit
V
CC
Power Supply Voltage
5.25
V
T
S
Storage Temperature
-40
to +
125
o
C
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
Typ
Max
Unit
V
CC
Positive Supply Voltage
4.75
5.0
5.25
V
T
A
Ambient Operating Temperature
-40
+
85
o
C
Table 4: Recommended Conditions of Operation
DC Characteristics
Unless stated otherwise, V
CC
= 5.0 Volts +5%, T
A
= 25
o
C, VCDRO Frequency =10-14GHz, Outputs terminated into 50
Symbol Parameter
Min
Typ
Max
Unit
Power Supply V
CC
Positive Supply Voltage
4.75
5.0
5.25
V
I
CC
Power Supply Current
150
mA
Tuning
Tuning Port Impedence
2
k
V
IN
Tuning Voltage
0
15
V
Table 5: DC Characteristics
M635 Datasheet Rev 7.1
3 of 4
Revised 10Apr2003
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 .
C o m m u n i c a t i o n s M o d u l e s
w w w. i c s t . c o m
t e l ( 5 0 8 ) 8 5 2 - 5 4 0 0
M635
D
IELECTRIC
R
ESONATOR
O
SCILLATOR
P r e l i m i n a r y I n f o r m a t i o n
Integrated
Circuit
Systems, Inc.
E
LECTRICAL
S
PECIFICATIONS
(
CONTINUED
)
T
EST
D
ATA
Phase Noise:
Figure 3: Phase Noise
Frequency Tuning Characteristics
Frequency Offset (ppm) vs. Tuning Voltage (V)
Figure 4: Frequency Tuning Characteristics
AC Characteristics
Unless stated otherwise, V
CC
= 5.0 Volts +5%, T
A
= 25
o
C, VCDRO Frequency =10-14GHz, Outputs terminated into 50
Symbol Parameter
Min
Typ
Max
Unit
F
OUT
Output Center
Frequency Range
10
14
GHz
Temperature Stability
±
300
ppm
Output Power
6
dBm
Tuning Range
10
20
40
MHz
Tuning Linearity
10
%
VCO Gain KVCO
200
ppm/V
APR
Absolute Pull-Range
±
1000
ppm
Non-harmonic Spurious
-
60
dBc
Harmonics
-
25
dBc
n
Single Side Band
Phase Noise
1
kHz Offset
-
65
dBc/Hz
10
kHz Offset
-
90
dBc/Hz
100
kHz Offset
-
110
dBc/Hz
J(t)
Jitter (rms)
50kHz to 80MHz
0.05
ps
Load VSWR (Voltage Standing Wave Ratio)
1.5:1
Table 6: AC Characteristics
0
1000
2000
3000
4000
5000
6000
7000
1.07
3.03
5.07
7.09
9.15
11
13
15
Vtune (VDC)
Fr
e
q
ue
nc
y
O
ffs
e
t
(ppm
)
M635 Datasheet Rev 7.1
4 of 4
Revised 10Apr2003
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 .
C o m m u n i c a t i o n s M o d u l e s
w w w. i c s t . c o m
t e l ( 5 0 8 ) 8 5 2 - 5 4 0 0
Integrated
Circuit
Systems, Inc.
M635
D
IELECTRIC
R
ESONATOR
O
SCILLATOR
P r e l i m i n a r y I n f o r m a t i o n
T
EST
D
ATA
(
CONTINUED
)
Typical Temperature Characteristics
Frequency Shift (ppm) vs. Temperature (
o
C)
Figure 5: Typical Temperature Characteristics
Output Power Change vs. Temperature (
o
C)
Figure 6: Output Power Change vs. Temperature (oC)
D
EVICE
P
ACKAGE
-
1.25 x 1.5 inch
C
ONNECTOR
M
ODULE
Mechanical Dimensions:
Figure 7: Device Package - 1.25 x 1.5 inch Connector Module
O
RDERING
I
NFORMATION
Consult ICS for the availability of other VCDRO 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.
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
-45
-30
-10
10
30
50
70
85
Temperature (degrees C)
P
o
w
e
r
C
h
a
nge
(
d
B
)
-100
-50
0
50
100
150
200
-45 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Tem perature (degrees C)
Fr
e
que
nc
y
S
h
i
f
t (ppm
)
Dielectric Resonator VCO #2
11.08
11.1
11.12
11.14
11.16
11.18
11.2
11.22
1.07
3.03
5.07
7.09
9.15
11
13
Vtune (VDC)
F
r
eq
u
e
n
cy (
G
H
z
)
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
-45
-30
-10
10
30
50
70
85
Tem perature (degrees C)
P
o
w
e
r
C
h
a
nge
(
d
B
)
#2 MTG CLEARANCE HOLE
GND
VIN
VCC
1.25
[31.8]
1.50
[38.1]
0.75
[19.05]
RF_OUT
SMA CONN
Dimensions are in inches;
dimensions in [ ] are in mm
All dimensions are
±0.02 [0.51]
For VCDRO Frequency (GHz)
Order Part Number
10.664
M635-10.6640
Table 7: Ordering Information
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