OCXO (Oven Controlled Crystal Oscillators) +5.0 V OC18E Series 50 ohm Load Sine Wave MERCURY Since 1973 Mercury OC18E5 is 20.3x20.3 mm 5 pin solder sealed metal pacakge with 15.2x15.2 mm pin-to-pin spacing high stability low aging OCXO. Besides standard AT cut crystal, users can also choose SC cut crystal for better performance. HCMOS square wave output is available as OC18T5 series. General Specifications ( 10 MHz at+25°C, at +5.0 V Vcc and +2.5 V Vcon) Sine wave. Wave form code is “E” 10 MHz ~100.0 MHz AT-cut. Use “A” for crystal code or SC-cut: use “S” for crystal code. Type of Crystal Cut Used SC has better performance but higher cost. See technical note TN-031. Supply Voltage (Vcc) +5.0 V D.C ±5% (voltage code is “5”) ±0.5 ppm max. at time of shipment; Vcon=+2.5V Initial Calibration Tolerance Best Stability 0°C to +60°C -20°C to +70°C -40°C to +85°C Operating Temperature Range ±0.02 ppm ±0.05 ppm ±0.1 ppm For AT crystal (custom spec. on request) ±0.01 ppm ±0.01 ppm ±0.03 ppm For SC crystal Aging (after 72 hours of AT:±5 ppb max./day; ±0.5 ppm max./first year;±3 ppm max. over 10 years. continuous operation) SC: ±2 ppb max./day; ±0.1 ppm max./first year;±0.5 ppm max. over 10 years. ±20 ppb max. Supply Voltage ±5% Variation Frequency Stability vs Output Wave From Frequency Range ±20 ppb max. Load ±5% variation Control Voltage Range AT: 3 minutes max. Within ±0.5 ppm of its reference frequency. SC: 1 minute max. Within ±0.1 ppm of its reference frequency. Referenced to fo at +25°C and over AT: ±5 ppm min. ±20 ppm max.; operating temperature range. SC: ±0.5 ppm min, ±2 ppm max. 2.5 V ± 2.0 V Transfer Function Positive: Increasing control voltage increases output frequency. Input Impedance 100 K ohms min. EFC Linearity ±10% max. Voltage Control on pin 1 (EFC) (Electronics Frequency Tuning) Warm-up time (at +25°C) Power Output Freq. Deviation Range Power Dissipation (at +25°C) 200 mA max. at steady-state; 500 mA max. at turn-on. Output Level +3 dBm typical; +8 dBm max. with 50Ω load Harmonic -30 dBc min. Spurious -75 dBc min. Reference Voltage Offset Phase 10 MHz AT-cut XTAL Noise 10 MHz SC-cut XTAL +4.0 V D.C.±0.3 V D.C. or custom. 1 Hz 10 Hz 100 Hz -75 dBc -100 dBc -130 dBc 1 KHz -140 dBc 10 KHz -150 dBc -85 dBc -145 dBc -150 dBc -120 dBc Storage Temperature -55°C to +125°C Shock 2000 G’s, 0.3 ms ½ sine Vibration 10 to 2000 Hz / 10 G’s MERCURY -140 dBc www.mercury-crystal.com Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail: [email protected] U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail: [email protected] MERCURY Page 1 of 2 Date: July 20, 2006 Rev. 0 OCXO (Oven Controlled Crystal Oscillators) +5.0 V OC18E Series 50 ohm Load Sine Wave OC18E Test Circuit - Since 1973 Vcc + V - coaxial 50 ohm Bottom view A + MERCURY Oscilloscope 0.1uF + - Vcon Frequency counter OC18E Series Package Dimensions and Pin Connections: unit mm Pin 1: Supply Control Pin 2: RF Output Pin 3: Ground / Case Pin 4: Voltage Control EFC Pin 5: Reference Voltage Output Part Number Format and Example: Example: OC18E5S-10.000-0.01/-20+70 OC 18 E 5 S — 10.000 — 0.01 ⁄ slash dash n o p q r dash s t n: “OC” Product Prefix for OCXO o: Package type. “18” for OC18 package p: Output wave form code. “E” for 50 ohm load Sine wave. q: Supply voltage code. “5” for +5.0V; r: Crystal type. Use “A” for AT-cut crystal; Use “S” for SC-cut crystal. s: Frequency in MHz; t: Frequency stability in ppm; u: Operating temperature range: -20°C to +70°C in this case. MERCURY Page 2 of 2 Date: July 20, 2006 -20+70 u Rev. 0