Surface Mount VCXO ECM VF194 / 294 § § § § § Very Low Phase Jitter Industrial Temperature Range Miniature Ceramic Package SMD Tri-state Oscillator 3.3V Supply Parameter Frequency Range Stability Supply Voltage Supply Current Load Duty Cycle Rise & Fall Times Logic “1” Level Logic “0” Level Start Up Time Phase Jitter Modulation BW Input Impedance Control Voltage Pulling Range Linearity Setability (Vc for center frequency) Tristate Fuction Enable Disable Operating Temp VF194 – VF294 Notes 1.54MHz to 160.0MHz +/-25ppm Vs. Temp 5V +/-5% Standard 3.3V +/-5% Option 30mA No Load 10TTL gates or 50pF 40 / 60 or 45/55 Specify 6nS max 0.9Vcc min Max Load 0.1Vcc max Max Load 10mS max 2mS Typ 1pS max <52MHz 20pS max >52MHz 10kHz @ -3dB min 50K ohm min Fm<10kHz 0V to 5.0V Vcc 5.0V 0V to 3.3V Vcc 3.3V +/- 50ppm Or Specify +/-20% 2.50V typ Vcc 5.0V 1.65V typ Vcc 3.3V Input HIGH (>2.5V) or floating: ACTIVE Input LOW (<0.5V): INFINITE IMPEDANCE 100ns max 0 0 0 C to +70 C Standard 0 0 -45 C to +85 C Available Option Part Numbering VF194 /294 S H L Type Stability S = 20ppm Blank = Std Duty Cycle H = 45/55 Blank = 46/60 Supply Voltage L = 3.3V Blank = 5.0 0 0 Temperature Range 1 = -40 C to +85 C Blank = Standard Pulling Range Blank = Std or specify Frequency 1 50 155.52M Environmental & Mechanical Mechanical Mil STD 202 Method 213 Shock Cond E Thermal Mil STD 883 Method 1011 Shock Cond A Vibration MIL-STD-883 Method 2007 Cond A 0 Soldering 230 C for 90s max -8 Hermetic Leak rate less than 5x10 Seal Atm.cc/s of helium Pin (VF194) Connection Pin (VF194) Connection 1 Vc 6 O/P 2 N/C 5 Tri 3 GND 4 Vcc Pin (VF294) Connection Pin (VF294) Connection 1 Vc 6 Vcc 2 Tri 5 N/C 3 GND 4 O/P A 7.7 B 5.2 C 2.3 D 1.14 E 5.08 F 1.27 G 3.93 Dimensions in mm ECM Electronics Limited, Penmaen House, Ashington, West Sussex, RH20 3JR, UK Tel: +44(0)1903 892810: Fax: +44(0)1903 892738. Email: [email protected] Although we have attempted to accurately reflect the products we market. ECM reserve the right without prior notice to discontinue any product or make design changes we believe necessary. Issue 1