FEI Model FE-205A, FE-405A, FE-505A DOCXO Double Oven Controlled Quartz Crystal OscillatorsProductsCustomer ServiceAbout UsFacilitiesCareersTechnical LiteratureInvestor RelationsNews & EventsSite MapHomeSpacecraftAirborneInternet, LAN, WANSeaborneGround StationsCommercial Network SyncMilitary Wireless CommunicationsLabs, Utilities, Satellite Control DOCXO Double Oven Controlled Quartz Crystal Oscillators Model FE-205A Model FE-405A Model FE-505A Features Analog or Digital Interface (LSB "1.7 x10-14) Excellent Temperature Stability <1 x10-10 -40° C to +75° C Operation Low Aging <5 x10-8 for 10 yrs. Retrace 1x10-10 after 1 hour, 24 hrs off Any frequency 5 MHz to 25 MHz Typical Applications Cellular Base Stations Test Equipment Stratum Clocks GPS Timing Systems Rubidium Replacement FE-205A FE-405A, FE-505A Function Description FE-205A, FE-405A, FE-505A Technical Characteristics This new design concept features a precision double oven crystal oscillator capable of analog or digital tuning. The serial digital tuning is ideal for disciplined applications in today’s telecommunications industry where holdover is important. The temperature coefficient of this device is less than 1x10-10. This is accomplished with no over or under shoot, with fast temperature slew rates of 4°C per minute. Performance is Determined by a Double Oven SC Cut 5 th Overtone Crystal. Output Frequency is Digitally Synthesized. Technical Highlights Superior crystal oscillator precision is required for both time and frequency in precision instrument applications such as synthesizers, counters and spectrum analyzers. The same high end performance characterisics are required in satellite transmissions, geophysical survey positioning systems, and standard time/time-interval generation and transfer. Using breakthrough design and packaging concepts, FEI has applied advanced technologies to create the best of both worlds... with small size and low costs. This makes the FE-205A, FE- 405A, and FE-505A your best choices for applications in which it is essential to combine excellent spectral purity with short- and long-term stability. Physical Characteristics FE-205A2.00" x 2.00" x 1.50" FE-405A3.01" x 3.03" x 1.44" FE-505A2.98" x 2.80" x 0.89" Supply VoltageStandard +15v DC ±5%, l amp max +5v DC±5%, 200ma Option 20 for single 15v input Warm-Up Power7W, max Steady State3.5W Max at 25ˇC Environmental Operating Temperature Range-40ˇC to +75ˇC meets all specifications Operational Temperature Range -55ˇC to +85ˇC may not meet freq. stability Options Available Option 2015V DC - Input Option 28Aging 2.5x10-11/day after 15 days of continuous Operation Option 30Analog Tuning (0V to 10V) * Contact factory for specials including custom packages Output Frequency10MHz and 15MHz Standard (Option for any other frequency 5 to 25MHz) RF OutputLevel: 9dBm ±2dBm into 50 ohm load Waveform: Sine wave Harmonics: -40dBc max Spurious: -65dBc to 1 GH Allan Variance (Short Term Frequency Stability)t=1 second(1 x 10-11) t=10 second(2 x 10-12) t=100 second(1 x 10-12) Long Term Stability5 x 10-10 /day, 5 x 10-8 /year Frequency Temperature Stability<1 x 10 -10 (-40° C to +75° C) (Including frequency over or undershoot at any fast or slow temperature slew rate) Phase Noise 1Hz -85dBc/Hz 10Hz -95dBc/Hz 100Hz -125dBc/Hz 1 KHz -135dBc/Hz 10 KHz-145dBc/Hz AgingPer Day<1 x 10 (after 14 days continuous operation) Typical 5 x 10 -11 Per Year<1 x 10 -8 Per 10 Years<5 x 10 -8 Frequency Retrace1 x 10-10 in 1 hr. after 24 hours power off 5 x 10-10 in 20 min. after 24 hours power off G-Sensitivity2 x 10-9 per G, any axis Input Voltage±15 VDC± 5% Input Voltage Sensitivity±1 x 10-9 for ±5% Digital Frequency Adjustment: Standard RF Output Frequency Adjustment:Digital control Via TTL serial port interface. For detail see Manual. Serial Communication9600 Baud, TTL level, 8 bits, no parity, 1 stop bit Adjustment resolution LSB ÷ 1.7 x 10-14 Adjustment Range• ± 20Hz for 15MHz output • ± 9.5Hz for 10MHz output (Other trim ranges can be special ordered) Analog Frequency Adjustment: Option 30 Coarse Adjust Range±2.4 x 10-7 Via DC input of 5v±5v (0 to +10v) Fine Adjust Range ±0.5 x 10-8 Via DC input of 5v±5v (0 to +10v)