75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevB1206
1
VFTX100
TCXO Low Noise to 1.0 GHz
25.4x22mm SMD, PECL/LVPECL
Electrical S
p
ecifications
Description
The VFTX100 is a low noise TCXO capable of providing an output frequency up to 1 GHz. The temperature
stability is less than 1ppm over a temperature range of -40 º C to + 85 º C. Operating with a +3.3 volt power
supply the device typically consumes 220 mW. The device contains an internal voltage regulator for improved
stability and noise performance. The output is configured as a differential LVPECL signal and requires external
termination resistors. The VFTX100 is available in a 25.4mm x 22 mm surface mount package.
Parameter Symbol Condition Min Typ Max Unit Note
Frequency
Range F 200 1,000 MHz
Vs. Operating Temperature
B: 0°C to +70°C
G: -40°C to +85°C
0.5
0.8
1.0
1.0
ppm
Frequency
Stability ∆F/F
Vs. Supply Voltage
Vs. Aging / Year
Vs. Aging / 10 Years
± 0.1
± 1
± 3
ppm/V
ppm
ppm
First Year
10 Years
Operating
Temperature
Range T 0°
-40° +70°
+85° °C Order Code B
Order Code G
Output Signal PECL / LVPECL
Supply
Voltage Vcc
4.75
3.15
5.00
3.30
5.25
3.45 V Order Code D
Order Code E
Voltage
Control Vc 0
0 5
3.3 V
Input
Impedance 50K Ω
APR ± 5 ppm
Deviation
slope Monotonic positive
Linearity -10 +10 ppm/V
Modulation
BW 10 Hz 3dB BW
Features
¾ 200MHz to 1.0 GHz Frequency Range
¾ Ultra Low Jitter and Phase Noise: -118 dBc/Hz @ 1KHz
¾ Excellent frequency stability < 1ppm
¾ Low Power: <220mW typical
Applications
¾ Sonet / SDH / ATM
¾ 10 Gigabit Ethernet
¾ Digital Wireless Reference
Replaces Valpey Fisher Part Number: VFT7H
RoHS Status
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevB1206
2
VFTX100
TCXO Low Noise to 1.0 GHz
25.4x22mm SMD, PECL/LVPECL
Electrical Specifications
Parameter Symbol Condition Min Typ Max Unit Note
Input Current Icc 50 Ohm Load 62 75 mA
Load 50 Ohm to Vcc-2V or Thevenin Equivalent
Duty Cycle @ 50% 45 50 55 %
Rise / Fall Time Tr/Tf 20% to 80% 0.6 ns
Logic “1” Level Voh Vcc-0.96 Vcc-0.81 V
Logic “0” Level Vol Vcc-1.85 Vcc-1.65 V
Start up time 2 10 ms
Phase Jitter 12KHz to 20MHz 0.25 0.5 ps
SSB Phase
Noise
100Hz
1KHz
10KHz
100KHz
-90
-118
-142
-145
dBc/Hz
@
622.08
MHz
Setability 0.1 ppm
Setability
Voltage 1.3 1.7 V
Enable /
Disable
Function
Input HIGH (>2.5V): DISABLED
Input LOW (<0.5V) or floating: ACTIVE LVCMOS
Enable /
Disable Time Te/Td 100 ns
How to Order
Temperature Range
Code Specification
B 0°C to 70°C
G -40°C to 85°C
VFTX100 FREQUENCY
,
MHz
Supply Voltage
Code Specification
D 5V ± 5%
E 3.3V ± 5%
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevB1206
3
VFTX100
TCXO Low Noise to 1.0 GHz
25.4x22mm SMD, PECL/LVPECL
Parameter Symbol Condition Min Typ Max Unit Note
Supply
Break Do wn
Voltage Vcc -0.5 5.5 V
Storage
Temperature Ts -55
+105° °C
Control
Voltage Vc -0.5 6 V
Parameter Specification
Mechanical Shock 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
Hermetic Seal Leak rate less than 5x10-8 atm.cc/s of helium (crystal only)
3 4
5
2
1 6
7
R3
10K Ω
C1
.01 uF
Vcc = 3.3V
Gnd
R1
180 Ω
Fou
t
nFout
R2
180 Ω
Disable
nc
Vc
Absolute Maximum Ratin
g
s
Environmental and Mechanical
Connection Diagram Mechanical Outline
Pin # Connection
1 Vc
2 N/C
3 Vcc
4 N/C
5 Output
6 Output
7 GND
