Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
VMEM
Military Clock Oscillator
Features Applications
Description
VMEM
Vectron’s VMEM high shock resistant Clock Oscillator is the next generation ruggedized silicon MEMS based stabilized square wave
generator with a CMOS output, operating o a +1.8, +2.5, +2.7 or +3.3Vdc supply.
The VMEM uses an internal compensation scheme to improve temperature stability which produces temperature performance equivalent
to quartz based products.
Silicon Resonator •
Excellent G Sensitivity Performance•
High Shock Survivability •
+1.8V, +2.5V, +2.7V or +3.3V Operation•
CMOS Output•
Output Frequencies to 150 MHz•
Enable/Disable for Board Test and Debug•
-20/70°C or –40/85°C Operating Temperature•
Industry Standard 5.0 x 3.2, 3.2 x 2.5 or 2.5 x 2.0 SMD Footprints•
Product is Compliant to RoHS Directive and Fully Compatible •
with Lead Free Assembly
Smart Munitions•
Projectile Electronics•
Missiles•
High Shock & Vibration Applications•
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Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Description
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Performance Speci cations
Speci cations
Table 1. Electrical Performance
Parameter Symbol Min Typical Maximum Units
Frequency fO1.000 150.000 MHz
Stability (ordering option) Δ f/fo±50, ±100 ppm
Operating Temperature (ordering option) TOP -20/70 or -40/85 °C
Operating Supply Voltage1
(ordering option)
VDD 1.65
2.3
2.45
3.0
1.8
2.5
2.7
3.3
1.95
2.7
2.95
3.6
V
V
V
V
Supply Current, Output Enabled
1 to 40MHz
40.01 to 80MHz
80.01 to 125MHz
125.01 to 150MHz
IDD
3
4
5
6
6
8
10
12
mA
mA
mA
mA
Supply Current, Output Disabled IDD 1uA
Output Logic Levels
Output Logic High2
Output Logic Low2
VOH
VOL
0.8*VDD
0.2*VDD
V
V
Output Load 15 pf
Output Rise/Fall Time2tR
tF
1.3
1.3
3
3
ns
ns
Duty Cycle3SYM 45/55 %
Period Jitter4, RMS, 80MHz Output
Peak to Peak
9
75
ps
ps
Start-up Time tSU 310 ms
Enable/Disable5
Output Enabled
Output Disabled
VIH
VIL
0.75*VDD
0.25*VDD
V
V
Fig 1: Test Circuit Fig 2: Output Waveform
tRtF
VOH
VOL
50%
On Time
Period
IDD
VDD
VC
IC15pF
4
12
3
.1μF
+
-
+
-
A 0.01uF and a 0.1uF capacitor should be located as close to the supply as possible (to ground) is recommended. 1]
Figure 2 de nes these parameters. Figure 1 illustrates the operating conditions under which these parameters are tested and speci ed. 2]
Duty Cycle is measured de ned as On Time/Period. 3]
Measured using a Wavecrest SIA3300C, 90K samples4]
Output will be active if Enable/Disable is left open.5]
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page3
Table 2. Absolute Maximum Ratings
Parameter Symbol Ratings Unit
Power Supply VDD -0.3 to +4.0 V
CMOS Input Voltage E/D -0.3 to (VDD +0.3) V
Junction Temperature TJ150 °C
Storage Temperature TSTR -62 to 125 °C
Soldering Temperature / Duration TPEAK / tP260 / 40 °C / sec
Under normal operation the E/D is set to a logic high state or logic low state. When E/D is set to a logic low, the oscillator stops
and the output is in a high impedance state. This helps reduce power consumption as well as facilitating board testing and
troubleshooting. When E/D is set to a logic high state, the oscillator produces an output. Leaving the Enable/Disable pin open
results in an active state with an output frequency.
Enable/Disable Functional Description
Outline Drawing, 5.0x3.2 option Suggested Pad Layout
Contact Pads are gold  ash over palladium over nickel
Figure 3, 5.0x3.2 Package drawing
Table 3. Pin Out
Pin Symbol Function
1E/D Enable/Disable
2 GND Electrical Ground
3f
OOutput Frequency
4V
DD Supply Voltage
Units: mm (inches)
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page4
Outline Drawing, 3.2x2.5 option Suggested Pad Layout
Outline Drawing, 2.5x2.0 option Suggested Pad Layout
Contact Pads are gold  ash over pallladium over nickel
Figure 4, 3.2x2.5 Package drawing
Contact Pads are gold  ash over palladium over nickel
Figure 5, 2.5x2.0 Package drawing
Units: mm (inches)
Units: mm (inches)
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page5
Reliability
The VMEMxQ quali cation tests were performed per MIL-PRF-55310 & the following environmental tests
Table 4. Environmental Compliance
Parameter Conditions
Mechanical Shock MIL-STD-202, Method 213, Condition F except 30,000g, 0.1 ms
Mechanical Vibration MIL-STD-883, Method 2007, Condition C, 100g
Thermal Shock MIL-STD-202, Method 107, Condition B
Ambient Pressure Operating MIL-STD-202, Method 105, Condition E
Gross and Fine Leak MIL-STD-883, Method 1014, Condition A2 & C
Resistance to Solvents MIL-STD-202, Method 215
Salt Atmosphere MIL-STD-883, Method 1009, Condition A
Moisture Resistance MIL-STD-202, Method 106
Low Temperature Storage Life JESD22-A119, Condition B
Handling Precautions
Table 5. ESD Ratings
Model Minimum
Human Body Model 2000V
Charged Device Model 500V
Machine Model 200 V
Although ESD protection circuitry has been designed into the the VMEMxQ, proper precautions should be taken when handling
and mounting. VI employs a Human Body Model and a Charged-Device Model (CDM) for ESD susceptibility testing and design
protection evaluation. ESD thresholds are dependent on the circuit parameters used to de ne the model.
Devices are built using lead free epoxy and can also be subjected to standard lead free IR re ow conditions. Figure 6 shows max
temperatures and lower temperatures can also be used e.g. peak temperature of 220C.
Suggested IR Pro le
Figure 6
Table 6. Re ow Pro le
Parameter Symbol Value
PreHeat Time
Ts-min
Ts-max
tS60 sec Min, 260 sec Max
150°C
200°C
Ramp Up RUP 3 °C/sec Max
Time Above 217 °C tL60 sec Min, 150 sec Max
Peak Temperature tP255-260°C
Time To Peak Temperature T25C to Peak 480 sec Max
Time at Peak Temperature tP20 sec Max
Ramp Down RDN 6 °C/sec Max
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page6
Standard Frequencies (MHz)
2.000 3.686 4.000 4.032 4.9152 5.000 6.000 7.3728 7.680 8.000
9.216 9.600 10.000 12.000 12.500 12.729 14.31818 14.746 16.000 16.128
17.000 20.000 21.000 21.500 22.000 23.000 24.000 25.000 26.000 27.000
29.4912 30.000 32.000 33.000 33.333 36.000 37.500 40.000 42.500 45.000
48.000 50.000 55.000 56.448 58.320 60.000 64.000 66.000 66.666 72.000
75.000 80.000 83.333 84.000 95.000 100.000 110.000 112.500 114.000 115.200
116.640 125.000 127.872
Other Frequencies Available Upon Request.
VMEMxQ - x 3 x - 25M0000000
Product Family
Ruggedized MEM’s Oscillator
Package Size
5: 5.0x3.2mm
3: 3.2x2.5mm
2: 2.5x2.0mm
Voltage Options
B: +3.3Vdc
J: +2.7Vdc
G: +2.5Vdc
H: +1.8Vdc
Electrical Options
3: Enable/Disable, 45/55% Duty Cycle
Frequency (See Above)
In MHz
Stability Options
A: ±100ppm, -20 to 70°C
B: ±50ppm, -20 to 70°C
C: ±100ppm, -40 to 85°C
D: ±50ppm, -40 to 85°C
Example: VMEM2Q-H3D-40M0000000 = 2.5x2.0, +1.8V, E/D, 45/55%, ±50ppm over -40/85°C with a 40.000MHz output
Ordering Information
Disclaimer
Vectron International reserves the right to make changes to the product(s) and or information contained herein without notice. No liability is assumed as a result of their use or application.
No rights under any patent accompany the sale of any such product(s) or information.
Rev: 10/16/2009
For Additional Information, Please Contact
USA:
Vectron International
267 Lowell Road
Hudson, NH 03051
Tel: 1.888.328.7661
Fax: 1.888.329.8328
Europe:
Vectron International
Landstrasse, D-74924
Neckarbischofsheim, Germany
Tel: +49 (0) 3328.4784.17
Fax: +49 (0) 3328.4784.30
Asia:
Vectron International
1F-2F, No 8 Workshop, No 308 Fenju Road
WaiGaoQiao Free Trade Zone
Pudong, Shanghai, China 200131
Tel: 86.21.5048.0777
Fax: 86.21.5048.1881