FREQUENCY PRODUCTS Features: * Internal 12 BIT Serial DAC * Small Size * High Stability * Digitally Adjustable CLOCKS The Model 120 features an internal 12 BIT digital to analog converter (DAC) which is serially addressable. The inclusion of the DAC in the OCXO adds additional ambient temperature control to this device, thus minimizing frequency error due to DAC reference voltage changes. VCXOs Electrical Specifications: Parameter Available Frequencies Input Voltage 4.8, 32.768 MHz +12.0 Vdc 30% Supply Current - Warm-up Steady State @ -40C 10 Watts max. 4 Watts Typical HCMOS Compatible Load Phase Noise TCXOs Output 20 pf Warm-up Referenced to the frequency @ 1 hr. (1 Hz Bandwidth) @8.192 MHz Frequency vs Power Supply (5%) 5 x 10 in 15 minutes -8 Offset 1 Hz 100 Hz 1 kHz 10 kHz Level (dBc/Hz) -115 -140 -145 -145 5 x 10-9 12 BIT Serial, MSB first Format Sufficient for 15 years 10% 400 REIMANN AVE. * SANDWICH, IL 60548 Phone: 815-786-8411 * Fax: 815-786-3600 * E-Mail: www.ctsreeves.com OCXOs Digital Frequency Adjust DAC Type Tuning Range Tuning Linearity CRYSTALS Model 120 DAC Controlled OCXO CTS Reeves 113 Model 120 DAC Controlled OCXO FREQUENCY PRODUCTS 2.10 SQUARE MAX Pin Connections 1.600 .110 MIN 1.00 MAX .800 PIN 1 2 3 4 5 6 7 CLOCKS CRYSTALS CTS Reeves FUNCTION RF OUTPUT GROUND. CASEPIN FUNCTION 1 RF OUTPUT +19 TO +26V OSC2 GROUND, CASE CLK - CLOCK 3 +19 TO +26V OSC 4 CLK - CLOCK SDI - SERIAL DATA IN SDI - SERIAL DATA IN 5 6 LD - LOAD STROBE LD - LOAD STROBE N/C - CTS USE 7 N/C - CTS USE .025 MIN C L 3 4 5 .800 6 .600 .400 2 C L 1 PIN NUMBERS FOR REFERENCE AND NOT MARKED ON UNIT. 1.600 7 INSULATING SPACER .040 .005 (7) PLACES VCXOs Mechanical Specifications: Solderability: 95% solder coverage, using RMA flux 63 SN/37 Pb at +245C 5C Case: Metal, hermetically sealed Leads: Kovar, solder coated Temperature: Operating: See chart Storage: -55 to 85C Seal: Solder Seal Vibration: 5 G's sine, 10 to 500 Hz Leak Test: Leak rate less than 5x10-5 Atmosphere-cc/sec of helium TCXOs Mechanical Shock: 50 G's 5ms pulse (3 shock/plane) Ordering Information: Model Type 120 ___ ___ ___ ___ ___ ___ ___ Temp. Range OCXOs Temp Stability 5 x 10-9 Temp Range Code A 0 to 50 C A X 0 to 70 C B -30 to 70 C C -40 to +85 C D Stability 1 x 10-8 B X X 2 x 10-8 C X X X Aging 5 x 10-8 D X X X X Freq. in MHz 1 x 10-7 E X X X X 1st Year Aging Code 0.5 ppm A 0.3 ppm B 0.1 ppm C 0.05 ppm D Note: Not all Options are Available at all Frequencies. Consult Factory for Details. 114 400 REIMANN AVE. * SANDWICH, IL 60548 Phone: 815-786-8411 * Fax: 815-786-3600 * E-Mail: www.ctsreeves.com