SURFACE MOUNT VCXO
VSMF SERIES:
Multi-Frequency Voltage Control Crystal Oscillator with Low Jitter Output
10MHz – 1200MHz
PRODUCT DESCRIPTION
The VSMF clock series is a cutting edge family of High Frequency, Low Jitter Output, Multi-Frequency VCXO
based on an advanced digital PLL platform. The VSMF oscillators are available in a 7x5mm ceramic package
with output frequency from 10MHz to 1.2 GHz. The VSMF units are pre-programmed with up to 2 different output
frequencies, any of which are user selected. Such flexibility significantly reduces design cycle time and overall
cost. The VSMF oscillator design incorporates a low frequency crystal along with low Jitter frequency
synthesizer to provide a wide range of frequencies. The VSMF Clocks are available in LVCMOS, LVPECL and
LVDS outputs, making them suitable for a wide range of applications.
APPLICATION
SONET/SDH
FIBRE CHANNEL
10G,100G, GIGABIT ETHERNET
CLOCK / DATA RECOVERY
TEST AND MEASUREMENT
ELECTRICAL SPECIFICATION
PARAMETER
Frequency, nominal
Supply voltage, nom.
Supply current
LVPECL output levels
LVPECL output voltage swing
LVDS differential output voltage
LVDS offset voltage, typical
LVCMOS / LVTTL output levels
Duty cycle
Rise/ fall time, max.
Absolute Pull Range
Control Voltage
Control Voltage Range
Modulation Bandwidth, min
RMS phase jitter
1
Overall freq. stability, max.
Enable / Disable
Operating temperature
Storage temperature
Absolute voltage range
Notes
1
See part numbering table
2
Contact factory
SYMBOL
f
O
V
CC
Is
VOH
VOL
Vp-p
∆V
OD
V
OS
VOH / VOL
DC
tr / tf
APR
VC
BW
J
∆f/fc
En / Dis
Ta
T(stg)
Vcc(abs)
CONDITIONS
Up to 2 available output frequencies
Typical (depending on output)
Output termination 50Ω ~ Vcc - 2.0V
Output termination 50Ω ~ Vcc - 2.0V
100Ω termination between outputs
min/max
Load = 10kΩ // 20pF
20% - 80% (VOL, VOH)
Min guaranteed freq. pull over
∆f/fc
Centered = ½ (Vcc)
Positive Slope; 10% Linearity, max
-3dB
Typical
Various available, specified when ordered
Min (logic 1) / Max (logic 0)
Absolute max
VALUE
UNIT
10 -1200
MHz
2.5 or 3.3
V
35 ~ 45
mA
Vcc -1.4 ~ Vcc - 0.9
V
Vcc - 2.0 ~ Vcc - 1.7
V
0.6 ~ 1.0
V
350
mV
1.25
V
0.7Vcc / 0.3Vcc
V
40/60 or 45/55
%
0.6
ns
±32,50,80,100
ppm
1.25, 1.65
V
0.3 ~ 0.9 (Vcc)
V
10
KHz
0.8
ps
±20 ~ ±100.
ppm
0.7 (Vcc) / 0.3 (Vcc)
V
-40 ~ +85
°C
-45 ~ +100
°C
Vcc ± 0.5
V
RALTRON 10651 N.W. 19
th
St Miami, Florida 33172 U.S.A.
Phone: (305) 593-6033 Fax: (305) 594-3973 e-mail: sales@raltron.com web: http://www.raltron.com
SURFACE MOUNT VCXO
MECHANICAL SPECIFICATION
INDICATES PIN 1.
.197 ±.008
5.0 ±0.2
OUTLINE TOLERANCE
IF NOT SPECIFIED
±0.015” / 0.4mm
PIN FUNCTIONS:
2
[1] CONTROL VOLTAGE (VC)
.276 ±.008
7.0 ±0.2
.079 MAX.
2.00 MAX.
.200
5.08
[2] FREQ. SELECT (SEL)
[3] GROUND
[4] OUTPUT
[5] COMP. OUTPUT
[6] SUPPLY VOLTAGE
.129
3.28
3
.100
2.54
3
.079 TYP.
2.00 TYP.
.087
2.20
1
.050
1.27
2
MARKING:
VSMF293 – (family)
ASH X-Y– (frequency codes)
R D/C – (factory date code)
*0.01uF external bypass capacitor is
recommended as seen in solder pattern
6
5
.055 TYP.
1.40
4
.071
1.80
.100
2.54
.150
3.81
SOLDER PATTERN
Notes
2
3
V
C
available on pin 1 or 2. See options on part numbering table.
Frequency Select pin (SEL)
Logic 1 (NC) = Output Frequency 1 (First frequency listed in part # is automatically available. Customer specified at time of order)
Logic 0 = Output Frequency 2 (Second frequency listed in part # is available. Customer sets SEL pin to Low)
PART NUMBERING SYSTEM:
SERIES
Surface
mount
Multi-
frequency
Clock
Oscillator
NUMBER OF
OUTPUTS
OUTPUT
SUPPLY
VOLTAGE
(V)
1:
Vcc =2.5
3:
Vcc =3.3
SYMMETRY
(%)
TEMP
RANGE
(°C)
R:
0~50
S:
0~70
U:
-20~70
V:
-40~85
APR
(ppm)
F:
±32
H:±50
G:±80
4
J:±100
V
C
and SEL
Option
OUTPUT FREQUENCY
(MHz)
1:
Single Output
2:
Dual Output
9:
LVPECL
8:
LVDS
4:
LVCMOS
A:
40/60
T:
45/55
1
: Pin 1= V
C
2:
Pin 1 = SEL
5
XXX.XXX-YYY.YYY
Freq1- Freq 2
VSMF
2
9
3
A
S
H
2
-
XXX-YYY
Notes
4
± 100ppm APR may not be available with all frequencies and operating temperature ranges
5
Pin 1= V
C
is default configuration.
EXAMPLE: VSMF293ASH2-622-311
Clock Oscillator, 7x5mm package, Dual output, LVPECL, +3.3V Supply, 40/60 Symmetry, 0~+70°C Operating
Temperature Range, ±50ppm APR, Select on pin 1, 622.080 MHz and 311.040MHz output frequency.
RALTRON 10651 N.W. 19
th
St Miami, Florida 33172 U.S.A.
Phone: (305) 593-6033 Fax: (305) 594-3973 e-mail: sales@raltron.com web: http://www.raltron.com
SURFACE MOUNT VCXO
REFLOW PROFILE:
t
P
T
P
Ramp-up
Critical Zone
T
L
to T
P
T
L
T
SMAX
Temp.
[°C]
T
SMIN
t
S
Preheat
t
L
Ramp-down
t[25°C] to Peak
Time [sec]
Temperature Min Preheat
Temperature Max Preheat
Time (T
SMIN
to T
SMAX
)
Temperature
Peak Temperature
Ramp-up rate
Ramp-down rate
Time within 5°C of Peak Temperature
Time t[25°C] to Peak Temperature
Time
Reflow profile IPC/JEDEC J-STD-020 REV. C
T
SMIN
T
SMAX
t
S
T
L
T
P
R
UP
R
DOWN
t
P
t[25°C] to Peak
t
L
150°C
200°C
60-180 sec.
217°C
260°C
3°C/sec max.
6°C/sec max.
20-40 sec.
480 sec.
60-150 sec.
RALTRON 10651 N.W. 19
th
St Miami, Florida 33172 U.S.A.
Phone: (305) 593-6033 Fax: (305) 594-3973 e-mail: sales@raltron.com web: http://www.raltron.com
Test/Measurement
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