Data Sheet

VFTX120
TCXO Low Noise
25.4x22mm SMD, SINE WAVE
Features




RoHS Status
30MHz to 180MHz frequency range
Ultra low jitter and phase noise: -135 dBc/Hz @ 1kHz
Excellent frequency stability <1ppm
Low power: <135mW typical
Applications



SONET / SDH / ATM
10 Gigabit Ethernet
Digital Wireless Reference
Description
The VFTX120 is a low noise TCXO capable of providing a sine wave output frequency up to 180MHz. The
temperature stability is less than 1ppm over a temperature range of -40ºC to + 85ºC. Operating with a +3.3 volt
power supply the device typically consumes 135 mW. The device contains an internal voltage regulator for
improved stability and noise performance. The VFTX120 is available in a 25.4mm x 22mm surface mount
package.
Replaces Part Number: VFT7H
Electrical Specifications
Parameter
Frequency
Range
Frequency
Stability
Operating
Temperature
Range
Output
Supply
Voltage
Voltage
Control
Input
Impedance
APR
Deviation
slope
Linearity
Modulation
BW
Symbol
Condition
F
∆F/F
T
Min
Typ
30
Max
Unit
180
MHz
1.0
1.0
ppm
Note
Vs. Operating Temperature
B: 0C to +70C
G: -40C to +85C
0.5
0.8
Vs. Supply Voltage
 0.1
ppm/V
Vs. Aging / Year
Vs. Aging / 10 Years
1
3
ppm
First Year
10 Years
+70
+85
C
Order Code B
Order Code G
3.45
V
Order Code E
3.3
V
0
-40
SINE WAVE
VCC
3.15
VC
0
3.30
10
kΩ
5
ppm
Monotonic positive
-10
10
+10
%
Hz
3dB BW
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevD0913
Specifications are subject to change without notice
1
VFTX120
TCXO Low Noise
25.4x22mm SMD, SINE WAVE
Electrical Specifications
Parameter
Symbol
Input Current
ICC
Condition
Min
Typ
Max
Unit
50
mA
Note
AC-coupled 50 Ohms
Load
Output Power
Into 50 Ohms
8
Start up time
10.5
2
10
ms
.4
ps
Phase Jitter
12kHz to 20MHz
0.15
SSB Phase
Noise
100Hz
1kHz
10kHz
100kHz
-110
-135
-154
-160
Setability
Ref. to ƒo
Setability
Voltage
1.3
dBm
dBc/Hz
0.1
ppm
1.7
V
@ 100 MHz
How to Order
VFTX120
FREQUENCY, MHz
Temperature Range
Code
B
G
Specification
0°C to 70°C
-40°C to 85°C
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevD0913
Specifications are subject to change without notice
2
VFTX120
TCXO Low Noise
25.4x22mm SMD, SINE WAVE
Absolute Maximum Ratings
Parameter
Supply
Break Down
Voltage
Storage
Temperature
Control
Voltage
Symbol
Condition
Min
Typ
Max
Unit
VCC
-0.5
4.6
V
TS
-55
+105
C
VC
-0.5
3.6
V
Note
Environmental and Mechanical Conditions
Parameter
Mechanical Shock
Conditions
Per MIL-STD-202, Method 213, Condition E
Thermal Shock
Per MIL-STD-883, Method 1011, Condition A
Vibration
Per MIL-STD-883, Method 2007, Condition A
Soldering Conditions
260C for 10s max
Leak rate less than 5x10-8 atm.cc/s of helium (crystal only)
Hermetic Seal
Epoxy ink or laser engraved
Markings
Connection Diagram
VCC = 3.3V
Mechanical Outline
R1
50Ω
FOUT
C1
0.01
3
4
N/C
5
N/C
R3
10kΩ
2
1
6
7
VC
N/C
GND
Pin #
1
2
3
4
5
6
7
Pin Assignments
Connection
VC
N/C
VCC
FOUT
N/C
N/C
GND
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevD0913
Specifications are subject to change without notice
3
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