OCXO (Oven Controlled Crystal Oscillators) OC14T12A, OC14GT12A (RoHS version) +12.0 V HCMOS Square MERCURY Since 1973 y Full size 4 pin DIP full metal package y+12.0 V D.C supply Voltage y 15 pF load HCMOS square wave output y AT-cut crystal y Voltage control (Electronic Frequency Tuning) on pin 1 General Specifications ( 10 MHz at+25°C, at +12.0 V Vcc and +2.5 V Vcon) Operating Temperature Range (custom spec. on request) Power Output HCMOS Square Wave. Wave form code is “T” 10 MHz ~40.0 MHz. AT-cut. Use “A” for crystal code. +12.0 V ±0.5 V (voltage code is “12”) ±0.5 ppm max. at the time of shipment. Vcon=+2.5V Operating 0°C to +60°C -20°C to +70°C Temperature Best Stability ±0.05 ppm ±0.1 ppm Available Typical Stability ±0.20 ppm ±0.30 ppm -40°C to +85°C ±0.2 ppm ±0.50 ppm Aging < ±0.7 ppm first year. < ±4.0 ppm over 10 years. Short Term Stability <1 E -10 (0.1 sec to 30 sec.); typical 5 E -11 at 1 sec. Supply Voltage ±0.5V Variation Warm-up time (at +25°C) < ±0.1 ppm Load ±5% variation < ±0.01 ppm 3 minutes max. Within ±0.1 ppm of its reference frequency. Voltage Control on pin 1 (EFC) (Electronics Frequency Tuning) Frequency Stability vs Output Wave Form Frequency Range Type of Crystal Cut Used Supply Voltage (Vcc) Initial Calibration Tolerance Freq. Deviation Range ±4 ppm min. Referenced to fo at +25°C Control Voltage Range 0.0 V to 5.0 V Transfer Function Positive: Increasing control voltage increases output frequency. Input Impedance 47 K ohms min. EFC Linearity ±10% max. Power Dissipation (at +25°C) 1 W max. at steady-state; 2 W max. at turn-on. Load (Fan Out) 10 LS Duty Cycle (measured at 1/2Vcc) 50% ±10% Output Voltage Logic High (VOH) +4.5 V min Output Voltage Logic Low (VOL) +0.4 V max. Rise and Fall Time 7 nS max. (measured at 20% ⇄ 80% of waveform.) Offset 10 MHz at static condition Storage Temperature 1 Hz 10 Hz 100 Hz 1 KHz 10 KHz -60 dBc -90 dBc -120 dBc -130 dBc -140 dBc Shock 2000 G’s, 0.3 ms ½ sine Vibration 10 to 2000 Hz / 10 G’s Phase Noise -65°C to +125°C MERCURY 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) +12.0 V OC14T12A, OC14GT12A (RoHS version) HCMOS Square MERCURY Since 1973 OC14T12A Test Circuit: Frequency counter T2 T1 Oscilloscope A + - Vcc + V - 14 8 1 7 90% 50% 0.1uF 15 pF 10% + - V control Tr Tf Duty Cycle = T1 *100% T2 OC14T12A Package Dimensions and Pin Connections: Pin 1: Voltage Control (EFC) Pin 7: Ground / Case Pin 8: RF Output Pin 14: Supply Voltage unit mm [inches] Square corner is pin No. 1 Part Number Format and Example: Example: OC14GT12A-10.000-0.1/-20+70 OC 14 G T 12 A — 10.000 — 0.1 dash n o p q r s dash t u n: “OC” Product Prefix for OCXO o: Package type. “14” for 4 pin DIP. p: “G” for RoHS compliant equivalent,” ”(blank) for non-RoHS part. q: Output wave form code. “T” for HCMOS square wave. r: Supply voltage code. “12” for +12.0; s: Crystal type. “A” for AT-cut crystal; t: Frequency in MHz; u: Frequency stability in ppm; v: Operating temperature range: -20°C to +70°C in this case. MERCURY Page 2 of 2 Date: July 20, 2006 ⁄ -20+70 slash v Rev. 0