SURFACE MOUNT VCXO
RALTRON 10651 N.W. 19th 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
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
Notes
1See part numbering table
2 Contact factory
PARAMETER SYMBOL CONDITIONS VALUE UNIT
Frequency, nominal fO Up to 2 available output frequencies 10 -1200 MHz
Supply voltage, nom. VCC 2.5 or 3.3 V
Supply current Is Typical (depending on output) 35 ~ 45 mA
VOH Vcc -1.4 ~ Vcc - 0.9 V
LVPECL output levels VOL Output termination 50 ~ Vcc - 2.0V Vcc - 2.0 ~ Vcc - 1.7 V
LVPECL output voltage swing Vp-p Output termination 50 ~ Vcc - 2.0V 0.6 ~ 1.0 V
LVDS differential output voltage VOD 350 mV
LVDS offset voltage, typical VOS 100 termination between outputs 1.25 V
LVCMOS / LVTTL output levels VOH / VOL min/max 0.7Vcc / 0.3Vcc V
Duty cycle DC Load = 10k // 20pF 40/60 or 45/55 %
Rise/ fall time, max. tr / tf 20% - 80% (VOL, VOH) 0.6 ns
Absolute Pull Range APR Min guaranteed freq. pull over f/fc ±32,50,80,100 ppm
Control Voltage VC Centered = ½ (Vcc) 1.25, 1.65 V
Control Voltage Range Positive Slope; 10% Linearity, max 0.3 ~ 0.9 (Vcc) V
Modulation Bandwidth, min BW -3dB 10 KHz
RMS phase jitter J Typical 0.8 ps
Overall freq. stability, max.1 f/fc Various available, specified when ordered ±20 ~ ±100. ppm
Enable / Disable En / Dis Min (logic 1) / Max (logic 0) 0.7 (Vcc) / 0.3 (Vcc) V
Operating temperature Ta -40 ~ +85 °C
Storage temperature T(stg) Absolute max -45 ~ +100 °C
Absolute voltage range Vcc(abs) Vcc ± 0.5 V
SURFACE MOUNT VCXO
RALTRON 10651 N.W. 19th 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
123
45
6
.197 ±.008
.276 ±.008
7.0 ±0.2
5.0 ±0.2
INDICATES PIN 1.
.079 MAX.
2.00 MAX.
.200
.100
5.08
2.54
.150
3.81
.055
1.40 TYP.
.050
1.27
.079 TYP.
2.00 TYP.
.129
3.28
.100
2.54
.071
1.80
SOLDER PATTERN
2.20
.087
MECHANICAL SPECIFICATION
Notes
2 VC available on pin 1 or 2. See options on part numbering table.
3 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 NUMBER OF
OUTPUTS OUTPUT
SUPPLY
VOLTAGE
(V)
SYMMETRY
(%)
TEMP
RANGE
(°C)
APR
(ppm)
VC and SEL
Option
OUTPUT FREQUENCY
(MHz)
Surface
mount
Multi-
frequency
Clock
Oscillator
1: Single Output
2: Dual Output
9: LVPECL
8: LVDS
4: LVCMOS
1: Vcc =2.5
3: Vcc =3.3
A: 40/60
T: 45/55
R: 0~50
S: 0~70
U: -20~70
V: -40~85
F: ±32
H:±50
G:±80
J:±100 4
15: Pin 1= VC
2: Pin 1 = SEL
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= VC 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.
OUTLINE TOLERANCE
IF NOT SPECIFIED
±0.015” / 0.4mm
PIN FUNCTIONS:
[1] CONTROL VOLTAGE (VC) 2
[2] FREQ. SELECT (SEL) 3
[3] GROUND
[4] OUTPUT
[5] COMP. OUTPUT
[6] SUPPLY VOLTAGE
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
SURFACE MOUNT VCXO
RALTRON 10651 N.W. 19th 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
REFLOW PROFILE:
Reflow profile IPC/JEDEC J-STD-020 REV. C
Temperature Min Preheat TSMIN 150°C
Temperature Max Preheat TSMAX 200°C
Time (TSMIN to TSMAX) tS 60-180 sec.
Temperature TL 217°C
Peak Temperature TP 260°C
Ramp-up rate RUP 3°C/sec max.
Ramp-down rate RDOWN 6°C/sec max.
Time within 5°C of Peak Temperature tP 20-40 sec.
Time t[25°C] to Peak Temperature t[25°C] to Peak 480 sec.
Time tL 60-150 sec.
Temp.
[
°C
]
Time
[
sec
]
TP
TL
TSMAX
TSMIN
Ramp-up
Ramp-down
Critical Zone
T
L
to T
P
t[25°C] to Peak
tS Preheat
tL
tP