VT-802
Temperature Compensated Crystal Oscillator
VT-802
Description
Vectron’s VT-802 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, CMOS output, analog temperature
compensated oscillator, operating off either 2.5 or 3.3 volt supply in a hermetically sealed 5.0x3.2 ceramic package.
Features
•
•
•
•
•
CMOS Output
Low Power
Output Frequencies to 50 MHz
Low Jitter Fundamental Crystal Design
Hermetically Sealed Ceramic SMD package
•
•
•
•
•
Applications
WiMAX, Wi-Fi,Wi-LAN
Wireless Communications
Base Stations
Point to point radios
Broadband Access
• Product is compliant to RoHS directive
and fully compatible with lead free assembly
Block Diagram
V
DD
Crystal
Output
Analog
Temperature
Comp.
Enable/Disable
Gnd
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Performance Specifications
Specifications
Table 1. Electrical Performance
Parameter
Output Frequency
Supply Voltage
1
, (Ordering Option)
Supply Current, 5 to 19.999MHz
20.000 to 50.0000MHz
Operating Temperature, (Ordering Option)
Symbol
f
O
V
DD
I
DD
T
OP
Min.
2
Typ
+2.5 or +3.3
Max
50
3
5
Units
MHz
V
mA
mA
°C
-20/70 or -40/85
STABILITY
Stability Over T
OP
(Ordering Option)
Initial Accuracy
Power Supply Stability
Load Stability
Aging
OUTPUT
Output Logic High
2
Output Logic Low
Output Load
Output Rise and Fall Time
Duty Cycle
Phase Noise, 12.800MHz
10Hz
100Hz
1kHz
10kHz
100kHz
Start Up Time
Input Logic High
3
Input Logic Low
Package
N
±2.0, ±2.5, ±5.0 or ±10
±1.0
±0.5
±0.2
±1.0
V
OH
V
OL
t
R
/t
F
45
-70
-108
-138
-155
-159
t
SU
Enable Disable Function
V
IH
V
IL
0.7*V
DD
0.3*V
DD
5x3.2.1.1
2
0.9*V
DD
0.1*V
DD
15
6
55
ppm
ppm
ppm
ppm
ppm/yr
V
pF
ns
%
dBc/Hz
ms
V
V
mm
1. The VT-802 power supply pin should be filtered, eg, a 0.1 and 0.01uf capacitor.
2. The Output is DC coupled.
3. The Output is active if the Enable Disable is left open.
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Outline Drawing and Recommended Layout
Top View
Top View
Table 2. Pinout
Pin #
1
2
3
4
Symbol
E/D
GND
f
o
V
DD
Function
Enable/Disable Function
Electrical and Lid Ground
Output Frequency
Supply Voltage
Maximum Ratings
S
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.
Although ESD protection circuitry has been designed into the VT-802, 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 3. Maximum Ratings
Parameter
Storage Temperature
E/D Voltage
ESD, Human Body Model
ESD, Charged Device Model
Symbol
T
STORE
E/D
Rating
-55/125
0/V
DD
1000
1000
Unit
ºC
V
V
V
Page3
Table 4. 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
S
Suggested IR Profile
Devices are built using lead free epoxy and can be subjected to standard lead free IR reflow conditions shown in Table 5. Contact
pads are gold over nickel and lower maximum temperatures can also be used, such as 220C.
Table 5. 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
The
Reliability
IR Reflow
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
Tape & Reel
Table 6. Tape and Reel Information
Tape Dimensions (mm)
W
18
F
1.75
Do
1.55
Po
4
P1
4
A
178
B
2.5
Reel Dimensions (mm)
C
13
D
22
N
60
W1
11.5
W2
15
#/Reel
1000
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Table 7. Standard Frequencies (MHz)
2.0481532881
27.027.00000
10.000
32.000
12.800
40.000
14.7456
50.000
16.384
19.200
19.440
20.000
25.000
26.000
Ordering Information
VT-802- E A E - 256 0- xxMxxxxxxx
Frequency in MHz
Product
TCXO
Package
5.0x3.2
Voltage Options
E: +3.3 Vdc ±5%,
H: +2.5 Vdc ±5%
Output
A: CMOS
*Note: not all combination of options are available.
Other specifications may be available upon request.
Tuning
0: Fixed, No tuning
Stability
206: ±2.0ppm
256: ±2.5ppm
506: ±5.0ppm
105: ±10.0ppm
Temp Range
J: -20/70°C
E: -40/85°C
For Additional Information, Please Contact
Example: VT-802-EAE-2560-19M2000000
*
Add
_SNPBDIP
for tin lead solder dip
Example: VT-802-EAE-2560-19M2000000_SNPBDIP
Revision History
Revision Date
Aug 10, 2018
Approved
FB
Description
Update logo and contact information, add “SNPBDIP” ordering option
For Additional Information, Please Contact
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