VT-800
Temperature Compensated Crystal Oscillator
Previous Vectron Model VTC4
VT-800
Description
Vectron’s VT-800 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, clipped sine wave output,
temperature compensated oscillator, operating off either 2.8, 3.0, 3.3 or 5.0 volt supply, hermetically sealed 5x3.2 mm ceramic
package.
Features
•
•
•
•
•
•
Clipped Sine Wave Output
Output Frequencies to 40 MHz
Fundamental Crystal Design
Optional VCXO Function available
Gold over nickel contact pads
Hermetically Sealed Ceramic SMD package
•
•
•
•
•
•
Applications
Wireless Communications
Base Stations
Point to point radios
Broadband Access
Test Equipment
Handsets
• Product is compliant to RoHS directive
and fully compatible with lead free assembly
Block Diagram
V
DD
Crystal
Output
Analog
Temperature
Comp.
Vcontrol or NC
Gnd
Page1
Specifications
Specifications
Table 1. Electrical Performance
Parameter
Output Frequency, +5V option
+2.8, +3.0, +3.3V options
Supply Voltage
1
Supply Current, 10 to 14.999MHz
15.000 to 25.999MHz
26.000 to 40.000MHz
Operating Temperature,
ordering option
Stability Over T
OP,
ordering option
Initial Accuracy
2
, “ No Adjust” Option
Power Supply Stability
Load Stability
Aging
Pull Range,
ordering option
Control Voltage to Reach Pull Range
Control Voltage Impedance
Output Level
3
Output Load
Phase Noise
4
, 10.000MHz
10Hz
100Hz
1kHz
10kHz
100kHz
Start Up Time
Package
5.0x3.2x1.5
1. The VT-800 power supply pin should be filtered, eg, a 0.1 and 0.01uf capacitor
2. Intial Accuracy is before IR reflow. Allow an additional ±1ppm shift through 2 reflows, after 24 hours
3. The Output is DC coupled
4. Measured at room ambient temperature using an Agilent E5052 Signal Source Analyzer
-91
-116
-137
-149
-150
10
ms
mm
V
O
p/p
TPR
0.5
1
0.8
10K II 10pF
dBc/Hz
±5.0, ±8.0, ±10.0, ±12.0
2.5
Symbol
f
O
V
DD
I
DD
Min.
10
10
Typ
Max
27
40
Units
MHz
V
+2.8, +3.0, +3.3 or +5.0
1.5
2.0
2.5
0/55, -10/60, -20/70, -30/80, -40/85
±0.5, ±1.0, ±1.5, ±2.0, ±2.5, ±3.0, ±4.0, ±5.0
±1.0
±0.2
±0.2
±1.0
mA
T
OP
°C
ppm
ppm
ppm
ppm
ppm/yr
ppm
V
Mohm
V
Outline Drawing
Recommended Pad Layout
1.1
1.4
XXMXXX
.YYWWC
Dimensions in mm
2.3
1.1
±0.1
3.8
Table 2. Pinout
Pin #
1
Marking
XXMXXX = Frequency
.YY = Year
WW = Week
C = Manufacturing Location
2
3
4
Symbol
V
C
GND
f
o
V
DD
Function
TCXO Control Voltage or No Connect
Electrical and Lid Ground
Output Frequency
Supply Voltage
Page2
S
VCXO Feature:
The VT-800 can be ordered with a VCXO function for applications were it will be used in a PLL, or the output frequency
needs fine tune or calibration adjustments. This is a high impedance input , 1Mohm, and can be driven with an op-amp or terminated with
adjustable resistors etc.
Pin 1 should not be left floating on the VCXO optional device.
“No Adjust” Option:
In applications were the VT-800 will not be used in a PLL, or the output frequency does not need fine tune
adjustments, the best device to use would be a VT-800-xxx-xxx0. By using the “no adjust” option, the circuit is simplified as V
C
does not need
to be adjusted or set to a predetermined voltage and pin 1 should be grounded (pin 1 can be left open but should not be set to a voltage
such as an RF signal or power supply voltage.)
Clipped Sine Wave Output
Phase Noise at 10MHz
VCXO Function
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-800, 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
Supply Voltage
Control Voltage
ESD, Human Body Model
ESD, Charged Device Model
Symbol
T
STORE
V
DD
V
C
Rating
-55/125
-0.6/6
-0.6/V
DD
+0.6
1500
1000
Unit
ºC
V
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
Weight
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 (0.3um min - 1.0um max) over Nickel
60 mg
IR Compliance
S
Suggested IR Profi
le
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
Ramp Up
Time above 217°C
Time to Peak Temperature
Time at 260°C
Time at 240°C
Ramp down
Symbol
ts
R
UP
tL
tAMB-P
tP
tP2
R
DN
Value
200 sec Max
3°C/sec Max
150 sec Max
480 sec Max
30 sec Max
60 sec Max
6°C/sec Max
Tape & Reel
Table 6. Tape and Reel Information
Tape Dimensions (mm)
W
12
F
7.5
Do
1.5
Po
4
P1
8
A
180
B
1.5
Reel Dimensions (mm)
C
13
D
20.2
N
60
W1
16.4
W2
20.4
#/Reel
1000
Page4
Ordering Information
Table 7. Standard Frequencies (MHz)
10.000
15.000
19.200
24.5454
40.000
10.245
16.000
19.440
24.5535
12.504
16.325291
19.6608
24.576
12.800
16.36625
19.680
25.000
13.000
16.367667
19.800
25.600
13.568
16.3683
20.000
26.000
14.000
16.396
20.910
27.000
14.31818
16.800
21.250
27.456
14.4844
17.500
23.104
28.800
14.7456
18.414
24.000
32.768
VT-800- E F G - 206 A- xxMxxxxxxxXX
Product
TCXO
Package
5.0x3.2 mm Ceramic
Voltage Options
D: +5.0 Vdc
±5%
E: +3.3 Vdc
±5%
F: +3.0 Vdc
±5%
G: +2.8 Vdc
±5%
Output
F: Clipped Sine Wave
Temp Range
R: 0/55
°C
K: -10/60
°C
J: -20/70
°C
G: -30/80
°C
E: -40/85
°C
Note:
Not all combination of options are available.
Other specifications may be available upon request.
Packaging
TR:
Tape and Reel
blank: Cut Tape / non Tape and Reel quantities
_SNPB: Tin lead solder dipped
Frequency
in MHz
Tuning
0: Fixed, No tuning
A:
±5ppm
B:
±8ppm
C:
±10ppm
D:
±12ppm
Stability
507:
±0.5ppm
106:
±1.0ppm
156:
±1.5ppm
206:
±2.0ppm
256:
±2.5ppm
306:
±3.0ppm
356:
±3.5ppm
406:
±4.0ppm
506:
±5.0ppm
Example:
VT-800-EFE-2060-24M5760000TR
VT-800-EFE-2060-24M5760000
VT-800-EFE-2060-24M5760000_SNPB
Tape and Reel
Cut Tape
Tin lead solder dipped
Page5
PCB设计
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
