Integrated Circuit Systems
M655 Series
Voltage Controlled SAW Oscillators
M655 Series
Performance Specifications
DESCRIPTION
The M655 Series of Voltage Controlled SAW
Oscillators is a low cost solution for many Telecom
applications. An internal SAW filter provides jitter
performance of less than 0.5psec (rms).
9mm
14mm
FEATURES
This device is specified for an operating
temperature range of -40°C to +85°C. A disable
feature forces the output into a static condition by
applying a logic “0” to the clock enable input. The
oscillator is housed in a hermetically-sealed,
leadless surface mount package.
The M655 Series of VCOs is available over an
output frequency range of 155MHz to 900MHz.
The device is most suited for phase-locked loop
applications as well as clock and data recovery
circuits.
Output Frequencies at 155MHz to
900MHz
Low Phase Jitter, 0.5psec (rms) typical
3.3 Volt Supply Operation
Complementary Outputs
Output Disable Feature
LCC Surface Mount Package
(9 x 14mm)
APPLICATION
ABSOLUTE MAX RATINGS
Operating Temp. Range (Case): ........................ -40°C to +85°C
Storage Temp. Range (Ambient): .................... -55°C to +125°C
Control Voltage Range: ................................................. 0 to V
CC
Output Current: ................................................................ 20 mA
Power Supply Voltage (Vcc): ................................ 0 to +3.6 Vdc
Clock Smoothing for OC192/OC48/
OC12/OC3
Clock Smoothing for STS96/STS48/
STS12/STS3/STS1
Frequency Translation
Clock and Data Retiming
ISO 9001
Registered
Integrated Circuit Systems, Inc.
Communications Modules
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www.icst.com/Comm-Modules
tel: 508-852-5400
Integrated Circuit Systems
SPECIFICATIONS
M655 Series
Performance Specifications
Specifications @ Vcc = +3.3 Volts, Vee = 0 Volts, and Ta = +25°C unless otherwise specified
PARAMETER
Output Frequency
Absolute Pull Range
Frequency Stability (-40°C to 85°C)
Duty Cycle
Spurious Suppression-50
Linearity
Logic Levels
Vol
1
Voh
2
Input Control Voltage (Vc) Range
VCO Gain
Vc Input Impedance
Vc Modulation BW
Clock/Output Enable (Pin 2)
Clock/Output Disable (Pin 2)
Output Rise Time
Output Fall Time
Jitter @ 155.520MHz offset from carrier
12kHz to 20MHz
Jitter @ 622.080MHz offset from carrier
12kHz to 80MHz
Phase Noise (offset from carrier)
100Hz
1kHz
10kHz
100kHz
Operating Temperature
Supply Current
Icc
Supply Voltage
Vcc
Min
Typ
Max
Units
155
±50
+25/-150
45
-60
±6
Vcc - 1.95
Vcc - 0.98
0
200
8
500
2.0
-0.3
250
250
0.230
0.458
-65
-95
-120
-140
25
80
3.3
900
55
dBc
Vcc - 1.63
Vcc - 0.75
Vcc
12
Vcc +0.3
0.8
400
400
MHz
ppm
ppm
%
%
Volts
Volts
Volts
ppm/V
KΩ
kHz
Volts
Volts
psec
psec
psec rms
psec rms
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
°C
mA
V
-40
3.2
+85
95
3.4
Notes: 1. Output levels are standard 10K ECL and are fully 100K ECL compatible.
2. Transition times are measured from 20% to 80% of a full 10K ECL level swing.
Phase Noise
-90
-100
-110
SSB Phase Noise dBc/Hz
-120
-130
-140
-150
-160
-170
1E+03
1E+04
1E+05
Frequency in Hz
1E+0
Integrated Circuit Systems, Inc.
Communications Modules
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www.icst.com/Comm-Modules
tel: 508-852-5400
Integrated Circuit Systems
SPECIFICATIONS
Jitter
M655 Series
Performance Specifications
Output
Typical Linearity
622310000
622280000
622250000
622220000
622190000
622160000
622130000
622100000
622070000
Typical Frequency Pushing
10
5
Deviation (PPM)
0
PPM Deviation
-5
-10
622040000
622010000
621980000
0.2
0.4
0.6
08
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
-15
3.15
Typical linearity of a M655 operating at 622.08 MHz
over the input range of .3 to 3.0 volts
3.2
3.25
3.3
Vcc (V)
3.35
3.4
3.45
Integrated Circuit Systems, Inc.
Communications Modules
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www.icst.com/Comm-Modules
tel: 508-852-5400
Integrated Circuit Systems
IR REFLOW PROFILE
M655 Series
Performance Specifications
IR Reflow Profile
(Vendor Recommendation)
220
Temperature (°C)
180
150
100
50
Micro Networks has subjected their VCSO component
to various reflow profiles and test conditions for
optimum substrate mounting performance. The
conditions suggested here are recommended
temperature settings for the VCSO device during the
reflow processes. The best case condition for the
device is a slow ramp up to prevent thermal shock
before reaching reflow temperatures of Sn/Pb flux
activated solder with a melting point of 183 degree
Celsius. The M655 device should not see
temperatures above 183 degrees Celsius for an
extended periods beyond 60 seconds. Maximum
peak temperature for the device should not exceed
220 degrees Celsius for longer then 20 seconds.
105–150
60
60–90
Time (seconds)
Micro Networks has designed the M655 device as a
sealed unit. The package is 100% tested for seal
defects. Aqueous, solvent, or other wash type
cleaning methods is acceptable for this device.
TAPE & REEL
G
J
C
B
A
D
F
N
I
L
M
E
O
K
H
TAPE & REEL DIMENSIONS
TAPE
A
B
C
D
E
M
N
O
MM
REEL
MM
24
F
1.78
11.5
G
21
1.5
H
13
4
I
100
12
J
5
9.2
K
25
14.5
L
330
3.7
No. per Reel: 300 Max
Communications Modules
4
Integrated Circuit Systems, Inc.
www.icst.com/Comm-Modules
tel: 508-852-5400
Integrated Circuit Systems
APPLICATIONS
M655 Series
Performance Specifications
Jitter Attenuator
155.52MHz
Φ
and Frequency
Detector
Loop
Filter
M655
155.520MHz
155.52MHz
Frequency Translator
19.44MHz
Φ
and Frequency
Detector
Loop
Filter
Divide by 32
M655
622.080MHz
622.080MHz
Multi-rate FEC Clock Generator
M655
622.080MHz
Fin
Φ
and Frequency
Detector
Loop
Filter
M655
666.514MHz
M655
669.13MHz
Programmable
Divider
Fout
MUX
Integrated Circuit Systems, Inc.
Communications Modules
5
www.icst.com/Comm-Modules
tel: 508-852-5400
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