QUARTZ STRATUM III OSCILLATORS OUTLINES AND DIMENSIONS EQAX-20 TCXO with STRATUM III Long-term stability option DESCRIPTION The Euroquartz EQAX-20 TCXO conforms to IEC60679-1, Stratum 3, providing a low-noise, highly-stable and reliable source of clock signals. FEATURES · Compact, SMD package Frequency range from 10Mhz to 20MHz Operating temperature range, -20° to +70°C Operable temperature -30° to +75°C Supply Voltage 3.3 Volts SPECIFICATION Frequency Range: Standard Frequencies: Frequency Stability Initial Tolerance: Vs. Temperature: Vs. Supply Voltage Var: Vs. Load Change: Long Term Ageing (1st Year): Long Term Stab. (15 Years): Frequency Adjustment Range Electronic Frequency Control EFC Voltage Vc: EFC Slope: EFC Input Impedance: Absolute Pull Range: RF Output Signal Waveform: Load: Symmetry (Duty Cycle): Start-up Time: Supply Voltage: Current Consumption: Operable Temperature Range: Storage Temperature Range: Enclosure: 9Mhz to 33Mhz 10, 12.8, 16.384, 19.44MHz ±1ppm @25°C ±2.5ppm -40°~+85°C ±1.5ppm -20°~+70°C -0.8ppm 0°~+50°C ±0.2ppm ±0.2ppm ±1ppm (@40°C) ±4.6ppm ±5ppm 0.25~+4.5V (Option II = ‘50’ 0.30~+3.0V (Option II = ‘33) Positive 10k Ohms PAD CONNECTIONS Pad No. 1 2 4` 5 Symbol VC GND RF OUT Vs Function Voltage Control Ground RF Output Supply Voltage ENVIRONMENTAL Test Visual inspection, Dimensions Sealing tests IEC 60068 Part . . IEC 61178-1 Clause . . Test Conditions 2-17 4.5 4.6 4.8.2 Solderability, Resistance to soldering heat Shock 2-20 4.8.3 2-27 4.8.8 Bump 2-29 4.8.6 Free fall 2-32 4.8.9 To order, specify as follows: Vibration, Sinsoidal 2-6 4.8.7 FREQUENCY-MODEL-OPTION I-OPTION II-OPTION III Rapid change of Temperature 2-14 4.8.5 Dry heat 2-2 4.8.11 Damp heat, cyclic 2-30 4.8.12 Cold 2-1 4.8.13 Climatic sequence 1-7 4.8.14 Damp heat, steady state Endurance tests, - ageing - extended ageing 2-3 4.8.15 Enclosure styles as in IEC 60122-3, if applic. Gross Leak: Test Qc Fine Leak: Test Qk Test Ta (235±5°C), method 1 Test Tb, method 1A, 5s Test Ea, 3x per axis 100g, 6ms 1/2sine Test Eb, 4000 bumps/ axis, 40g, 6ms Test Ed, procedure 1, 2 drops from 1m ht. Test Fc, 30 min/axis, 10Hz-55Hz, 0.75mm; 55Hz -2kHz, 10g Test Na, 10 cycles at extremes of operating temperature range. Test Ba, 16 h at upper temperature. Test Db variant 1 severity b, 55°C/95%rh Test Aa, 2h at lower temperature indicated by climatic category. Sequence of 4.8.11, 4.8.12 and 4.8.13 Test Ca, 56 days 4.9.1 4.9.2 30 days @ 85°C 1kh, 2kh, 8kh, @85°C HCMOS 15pF 60%/40% 4 ms +5.0V±5%/+3.3V±5% 25mA maximum (@25°C) -40°~+85°C -40°~+85°C As drawing ORDERING CODE EXAMPLE: 12.800MHz EQAX-20-25-50-46 OPTION I - Tolerance vs Temperature 25 = ±2.5ppm -40°~+85°C 15 = ±1.5ppm -20°~+70°C 08 = 0.8ppm 0°~+50°C OPTION II - EFC Voltage 50 = 0.25V~4.75V 33 = 0.30V~3.0V OPTION III - Long Term Stability 46 = ±4.6ppm overall, 15 years EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 1460 230000 Fax: +44 1460 230001 email: [email protected] web: www.euroquartz.co.uk