TX-280
Temperature Compensated Crystal Oscillator
TX-280
Description
Vectron International has introduced a series of surface mount, Temperature Compensated Crystal Oscillators (TCXO) available in
The TX-280 surface mount TCXO’s can be mounted using the standard convection re ow process. The units can meet the
±0.37
holdover requirement of GR-1244-CORE table 3-1 from 0 °C to +70 °C temperature range and operate from 3.3V or 5.0V supply.
Features
•
•
•
•
•
Stratum 3 Compliant
Tight Stability
Low Aging
Frequency Range: 10 MHZ to 622 MHZ
Previous Model: MC1200, TC-210
•
•
•
•
Applications
SONET/SDH
Synthesizers
Optimized for Semtech SONET / SDH
Synchronization Sets
Performance Speci cations
Parameter
vs. operating temperature range
(referenced to +25°C)
Min
-0.8
-0.28
-0.8
-0.28
-0.28
-1.5
-0.1
-0.1
-2.5
-4.6
Typ
Max
+0.8
+0.28
+0.8
+0.28
+0.28
+1.5
+0.1
+0.1
+2.5
+4.6
Units
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
Condition
-40… +85°C
-30… +85°C
-20… +70°C
-20… +70°C
0… +50°C
at time of shipment, No EFC
Vs ± 5%
Load ± 10%
*Stratum 3 per GR-1244-CORE:
<±4.6 ppm for all causes and 15
years aging, Holdover: <±0.37
ppm over 24 hours
Frequency Stabilities
1
Initial Tolerance (w\ xed frequency)
vs. supply voltage change
vs. load change
vs. aging / 15 years
Overall Tolerance
Supply Voltage (Vs)
Supply voltage (Standard)
Supply voltage (Option)
3.135
4.75
3.3
5.0
3.465
5.25
VDC
VDC
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Performance Speci cations
Parameter
Current consumption (depends on
frequency and output type)
Min
Typ
Max
15
15
70
Units
mA
mA
mA
Condition
steady state @ +25°C & 3.3VDC
steady state @ +25°C & 5.0VDC
PECL
RF Output
Signal
Load
Rise/Fall Time
Duty cycle
Signal
Load
Output Power (Standard)
Harmonics
Spurious
Signal (custom number required)
Load
Signal Level (Vol)
Signal Level (Voh)
Rise & Fall Times (measured @ 20%)
Duty cycle
45
Vs
-1.025
1000
600
55
0.0
40
13.5
15
HCMOS
16.5
5
60
Sinewave
50
+3.0
+6.0
-30
-30
PECL
50
Vs
-1.62
ohm
V
V
ps
ps
%
Into Vcc-2V or there in equivalent
-40...+85°C operating temp
-40...+85°C operating temp
<100 MHz
>= 100 MHz
@ 50 % Vcc
ohm
dBm
dBc
dBc
If applicable
pF
ns
%
10% - 90%
@ (Voh-Vol)/2
3.0 to 100 MHz
Frequency Tuning (EFC)
Tuning Range
Tuning Range
Linearity
Tuning Slope
Control Voltage Range (nominal
frequency to occur at Typ ± 0.5V)
Freq. control input impedance
0.3
0.5
10
1.65
2.5
±8.0
Fixed; No adjust
±12.0
±20.0
20
Positive
3.0
4.5
VDC
VDC
kohm
with Vs=3.3VDC
with Vs=5.0VDC
ppm
%
Additional Parameters
1
Phase Noise
3
(Stratum 3 TCXO @12.8 MHz)
-115
-130
-140
1
9.0
dBc/Hz
dBc/Hz
dBc/Hz
ppb
g
Handling & processing note
100 Hz
1 kHz
10 kHz
Tau= 1 sec
Allan Variance
Weight
Processing & Packing
Supply voltage (Vs)
Control Voltage
Maximum output load @ CMOS
Operable temperature range
Storage temperature range
-40
-55
Absolute Maximum Ratings
6
6
40
+85
+125
V
V
pF
°C
°C
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Standard Shipping Method
Production tolerance complying DIN IEC 286-3
Enclosure Type
Tape width W
[mm]
Quantity per meter
Quantity per reel
Dimension P
Recommended Re ow Pro le
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Outline Drawing / Enclosure
Dimensions in mm (inches)
Pin Connections
Type C
Code
0
Height “H”
6.8
Pin Length “L”
NA
1
2
3
4
5
Output
Supply
Ground (Case)
Freq. Adjust / No Connect
Ground
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Ordering Information
TX - 280 0 - D A J - 807
Product Family
TX: TCXO
Package
20 x 22 mm
Height
0: C6.8mm
Supply Voltage
D: 5 Vdc
E: 3.3 Vdc
RF Output Code
A: HCMOS
C: PECL
E: Sinewave
0 - 10M0000000
Frequency
Tuning Option
0: No Tuning
1: Electrical Adjust (EFC)
Stability Code
807: ±0.8ppm
287: ±0.28ppm
466: ±4.6ppm Stratum3
Temperature Range
E: -40°C to +85°C
H: -30°C to +85°C
J: -20°C to +70°C
P: 0°C to +50°C
Notes:
1. Contact factory for improved stabilities or additional product options. Not all options and codes are available at all
frequencies.
2. Unless other stated all values are valid after warm-up time and refer to typical conditions for supply voltage, frequency
control voltage, load, temperature (25°C).
3. Phase noise degrades with increasing output frequency.
4. Subject to technical modi cation.
5. Contact factory for availability.
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
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: 12/9/2008 daf
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
