VFTX140 Stratum 3 TCXO to 1.0 GHz 25.4x22mm SMD, LVPECL RoHS Status Features ¾ ¾ ¾ ¾ Stratum 3 Timing Source 200MHz to 1.0 GHz Frequency Range Ultra Low Jitter and Phase Noise: -118 dBc/Hz @ 1KHz Low Power: <220mW typical Applications ¾ ¾ ¾ Sonet / SDH / ATM 10 Gigabit Ethernet Digital Wireless Reference Description The VFTX140 is a Stratum 3 TCXO capable of providing an output frequency up to 1 GHz. The temperature stability is less than 0.28 ppm over a temperature range of 0ºC to + 70ºC. 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 VFTX140 is available in a 25.4mm x 22mm surface mount package. Electrical Specifications Parameter Frequency Range Frequency Stability Symbol Condition Min F Typ 200 Vs. Operating Temperature 0°C to +70°C Unit 1,000 MHz ±0.28 ppm ±4.6 ppm Note ∆F/F Overall conditions including aging 20 years Operating Temperature Range Output Supply Voltage Voltage Control Input Impedance APR Deviation slope Linearity Modulation BW Max T 0° +70° °C LVPECL Vcc 3.15 Vc 0 3.30 3.45 V 3.3 V 10K Ω ±5 ppm Monotonic positive -10 10 +10 % Hz 3dB BW 75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevE0907 1 VFTX140 Stratum 3 TCXO to 1.0 GHz 25.4x22mm SMD, LVPECL Electrical Specifications Parameter Symbol Condition Input Current Icc 50 Ohm Load Load Min Typ Max Unit 65 80 mA 50 Ohm to Vcc-2V or Thevenin Equivalent Duty Cycle @ 50% 45 50 20% to 80% 55 % 0.6 ns Rise / Fall Time Tr/Tf Logic “1” Level Voh Vcc-0.96 Vcc-0.81 V Logic “0” Level Vol Vcc-1.85 Vcc-1.65 V 2 10 ms 0.5 ps Start up time Phase Jitter 12KHz to 20MHz 0.25 SSB Phase Noise 100Hz 1KHz 10KHz 100KHz -90 -118 -142 -145 Setability Ref. to ƒo Setability Voltage Enable / Disable Function Enable / Disable Time Note dBc/Hz 1.3 0.1 ppm 1.7 V Input HIGH (>2.5V): DISABLED Input LOW (<0.5V) or floating: ACTIVE Te/Td @ 622.08 MHz LVCMOS 100 ns How to Order FREQUENCY, MHz VFTX140 Temperature Range Code B Supply Voltage Code E Specification 0°C to 70°C Specification 3.3V ± 5% 75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevE0907 2 VFTX140 Stratum 3 TCXO to 1.0 GHz 25.4x22mm SMD, LVPECL Absolute Maximum Ratings Parameter Supply Break Down Voltage Storage Temperature Control Voltage Symbol Condition Min Typ Max Unit Vcc -0.5 5.5 V Ts -55 +105 °C Vc -0.5 6 V Note Environmental and Mechanical Parameter Mechanical Shock Thermal Shock Specification Per MIL-STD-202, Method 213, Condition E 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 Connection Diagram Vcc = 3.3V C1 .01 uF Mechanical Outline Disable 3 4 R1 180 Ω Fout 5 nc R3 10K Ω 2 1 6 7 Vc Gnd Pin # 1 2 3 4 5 6 7 nFout R2 180 Ω Connection Vc N/C Vcc N/C Output Output GND 75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevE0907 3