Temperature Compensated Crystal Oscillator
VT-702
PRELIMINARY
VT-702
Description
Vectron’s VT-702 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, Clipped sine wave or CMOS output,
analog temperature compensated oscillator, operating off a 5.0 or 3.3 volt supply in a hermetically sealed 10-pad 7.0 x 5.0 mm
ceramic package.
Features
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5.000 - 52.000MHz Output Frequency
±0.28ppm Temperature Stability
Optional Frequency Tuning
Fundamental Crystal Design
Stratum 3 version available as a custom part number
Gold over nickel contact pads
Hermetically Sealed Ceramic SMD package
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•
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Applications
Femto Cells
Base Stations
IP Networking
Global Positioning Systems
Point to Point Radio
Manpack Radio
Test and Measurement
• Product is compliant to RoHS directive
and fully compatible with lead free assembly
Block Diagram
V
DD
Crystal
Output
Analog
Temperature
Comp.
V
C
(Optional)
E/D
GND
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page1
Specifications
Table 1. Electrical Performance, Clipped Sine Wave Option
Parameter
Output Frequency
1
,
Ordering Option
Supply Voltage
3
,
Ordering Option
Supply Current
Operating Temperature,
Ordering Option
Stability Over T
OP4
,
Ordering Option
Frequency Tolerance
5
Power Supply Stability, ±5%
Load Stability, ±10%
Aging / 1st year
Tuning Range
6
Tuning Slope
Control Voltage to reach Pull Range
Control Voltage Impedance
Output Level High
Output Load
Start Up Time
Output Enable
7
Output Disable
Phase Noise, 10.00MHz
8
10Hz
100Hz
1kHz
10kHz
100kHz
V
O
p-p
C
L
t
SU
V
IH
V
IL
0
N
0.7*V
DD
Phase Noise
8
-99
-123
-143
-152
-155
dBc/Hz
V
C
0.5
100
RF Output (Clipped Sine Wave),
Ordering Option
0.8
10k || 10pF
2
0.3*V
DD
ms
V
V
V
Symbol
f
O
V
DD
I
DD
T
OP
F
STAB
F
TOL
F
PWR
F
LOAD
F
AGE
Frequency Tuning (EFC),
Ordering Option
PR
±5.0, ±8.0, ±10.0, ±12.0
Positive
1.5
2.5
V
Kohm
ppm
Frequency Stability
±0.05, ±0.10, ±0.20, ±0.28, ±0.50
±2.0
±0.2
±0.2
±1.0
ppm
ppm
ppm
ppm
ppm
Min.
5
+2.8, +3.0, +3.3, +5.0
3.5
0/55, -10/70, -20/70, -30/80, -30/85, -40/85
Typ
Max
52
Units
MHz
V
mA
°C
1. Refer to Table 8 for Standard Frequencies. Other Frequencies are available on request. Check with factory.
2. Output DC-cut capacitor is optional.
3. The VT-702 power supply pin (Pin9) should be filtered using a by-pass capacitor of 0.1uF for optimal performance.
4. Referenced to the midpoint between minimum and maximum frequency value over Operating Temperature Range.
5. Frequency measured at 25 °C, 1 hour after 2 IR reflows.
6. Referenced to Mid Control Voltage
7. Output is enabled if Pin8 is left open.
8. Measured at ambient temperature using Agilent E5052B Signal Source Analyzer.
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page2
Table 2. Electrical Performance, CMOS Option
Parameter
Output Frequency
1
,
Ordering Option
Supply Voltage
3
,
Ordering Option
Supply Current
Operating Temperature,
Ordering Option
Stability Over T
OP4
,
Ordering Option
Frequency Tolerance
5
Power Supply Stability, ±5%
Load Stability, ±10%
Aging / 1st year
Tuning Range
6
Tuning Slope
Control Voltage to reach Pull Range
Control Voltage Impedance
Output Level High
Output Level Low
Output Load
Duty Cycle
Start Up Time
Rise & Fall Times
Output Enable
7
Output Disable
Phase Noise, 10.00MHz
8
10Hz
100Hz
1kHz
10kHz
100kHz
t
SU
t
R
/t
F
V
IH
V
IL
0
N
0.7*V
DD
Phase Noise
8
-101
-124
-144
-154
-156
dBc/Hz
V
OH
V
OL
C
L
45
V
C
0.5
100
RF Output (CMOS),
Ordering Option
0.9*V
DD
0.1*V
DD
15
55
2
4
0.3*V
DD
V
pF
%
ms
ns
V
V
Symbol
f
O
V
DD
I
DD
T
OP
F
STAB
F
TOL
F
PWR
F
LOAD
F
AGE
Frequency Tuning (EFC),
Ordering Option
PR
±5.0, ±8.0, ±10.0, ±12.0
Positive
1.5
2.5
V
Kohm
ppm
Frequency Stability
±0.05, ±0.10, ±0.20, ±0.28, ±0.50
±2.0
±0.2
±0.2
±1.0
ppm
ppm
ppm
ppm
ppm
Min.
5
+2.8, +3.0, +3.3, +5.0
6.0
0/55, -10/70, -20/70, -30/80, -30/85, -40/85
Typ
Max
52
Units
MHz
V
mA
°C
1. Refer to Table 8 for Standard Frequencies. Other Frequencies are available on request. Check with factory.
2. Output DC-cut capacitor is optional.
3. The VT-702 power supply pin (Pin9) should be filtered using a by-pass capacitor of 0.1uF for optimal performance.
4. Referenced to the midpoint between minimum and maximum frequency value over Operating Temperature Range.
5. Frequency measured at 25 °C, 1 hour after 2 IR reflows.
6. Referenced to Mid Control Voltage.
7. Output is enabled, if Pin8 is left open.
8. Measured at ambient temperature using Agilent E5052B Signal Source Analyzer
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page3
Phase Noise Performance for 10MHz CMOS
Package Drawing
Recommended Land Pattern
Table 2. Pinout
Pin #
1
Dimensions in mm
2
3
Marking Information
XXMXXX - Frequency (19M440)
YY - Year of Manufacture
WW - Week of the Year
T - Manufacturing Location
- Pin 1 Indicator
4
5
6
7
8
9
10
Symbol
NC
NC
NC
GND
OUT
NC
NC
E/D or NC
V
DD
V
C
or NC
Function
No Connect
No Connect
No Connect
Ground
RF Output
No Connect
No Connect
Enable / Disable or No Connect
Supply Voltage
TCXO Control Voltage or No Connect
XXMXXX
YYWW T
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page4
Maximum Ratings
Absolute Maximum Ratings and Handling Precautions
Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is not implied or any other
excess of conditions represented in the operational sections of this data sheet. Exposure to absolute maximum ratings for extended
periods may adversely affect device reliability.
S
Although ESD protection circuitry has been designed into the VT-702, proper precautions should be taken when handling and mounting,
VI employs a Human Body Model and Charged Device Model for ESD susceptibility testing and design evaluation.
ESD thresholds are dependent on the circuit parameters used to define the model. Although no industry standard has been adopted for
the CDM a standard resistance of 1.5kOhms and capacitance of 100pF is widely used and therefor can be used for comparison purposes.
Table 4. Maximum Ratings
Parameter
Storage Temperature
Supply Voltage
Control Voltage
Enable/Disable Voltage
ESD, Human Body Model
ESD, Charged Device Model
Symbol
T
STORE
V
DD
V
C
E/D
Rating
-55/125
-0.6/6
-0.6/V
DD
+0.6
-0.6/V
DD
+0.6
1500
1000
Unit
ºC
V
V
V
V
V
Reliability
Table 5. Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Temperature Cycle
Solderability
Fine and Gross Leak
Resistance to Solvents
Moisture Sensitivity Level
Contact Pads
Condition
MIL-STD-883 Method 2002
MIL-STD-883 Method 2007
MIL-STD-883 Method 1010
MIL-STD-883 Method 2003
MIL-STD-883 Method 1014
MIL-STD-883 Method 2015
MSL1
Gold over Nickel
IR Reflow
Suggested IR Profile
Devices are built using lead free epoxy and can be subjected to standard lead free IR reflow conditions shown in Table 6. Contact pads are
gold over nickel and lower maximum temperatures can also be used, such as 220°C.
Table 6. Reflow Profile
Parameter
PreHeat Time
Ts-min
Ts-max
Ramp Up
Time above 217C
Time to Peak Temperature
Time at 260C
Time at 240C
Ramp down
S
Symbol
t
s
Value
200 sec Max
150°C
200°C
3ºC/sec Max
150 sec Max
480 sec Max
30 sec Max
60 sec Max
6ºC/sec Max
R
UP
t
L
t
25C to peak
t
P
t
P2
R
DN
Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page5
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