EURO QUARTZ CXOXHT HIGH TEMPERATURE OSCILLATORS High Temperature/High Shock 1.0MHz to 50.0MHz FEATURES High temperature operation up to 225°C Excellent stability over temperature Fast start-up High shock resistance CMOS/TTL compatible output Low EMI emission Hermetically sealed ceramic package OUTLINE & DIMENSIONS DESCRIPTION For applications with high operating temperatures such as downhole instrumentation, rotary shaft sensors and underground boring tools. SPECIFICATION Specifications are typical at 25°C unless otherwise indicated. Tighter specifications are available, contact Euroquartz technical sales. Supply Voltage: +3.3 or +5.0Volts ±10% Calibration Tolerance: ±50ppm or tighter as reqd. Frequency Stability 25° ~ +150°C: ±100ppm 25° ~ +175°C: ±150ppm 25° ~ +225°C: ±175ppm Supply Current (Typical) 3.3V 5.0V 24MHz: 3.0mA 8.0mA 32MHz: 5.0mA 10.0mA 50MHz: 6.0mA 14.0mA Output Load (CMOS): 15pF Start-up Time: 5ms max. Rise/Fall Time: 10ns typical Duty Cycle: 60/40% Ageing first year: ±5ppm max. at 25°C Ageing: ±100ppm max. at 200°C Shock Survival Standard: 3,000g, 0.3ms, ½ sine HG version: 10,000g, 0.3ms, ½ sine Vibration Survival: 20g, 10~2000Hz swept sine Operating Temp. Range: -55°C to 225°C ENABLE/DISABLE OPTIONS (E/N) CXOXHT oscillators have two enable/disable options, designated E & N. The E version has a tristate output and stops oscillating internally when the output is placed in a high Z state. The N version does not have the control pin, Pin1, connected internally so there is no enable/disable function with this option. PACKAGING OPTIONS CCXOXHT oscillators are available either tray packed <250pcs, or tape and reel >250 pieces. 16mm tape, 178mm or 330mm reels (EIA 418). ENABLE/DISABLE OPTION E - FUNCTION TABLE Output Enable (Pin1 High*) Disable (Pin 1 Low) Frequency Output High Z state Oscillator Current Oscillates Stops 500µA @25°C 3.2µA @25°C *When Pin 1 is allowed to float it is held by an internal pull-up resistor HOW TO ORDER CXOXHT OSCILLATORS CXOXHT Package Type CXOMHT CXOXHT 4 S Supply Voltage 4 = 3.3V 5 = 5.0V Blank = standard S = special or custom HG E Enable/Disable option E or N Shock Level Blank = standard HG = high shock SM1 - Terminations Blank = SM1 =Gold plated SM3 = Solder dipped SM5 = Solder dipped (lead free) 20.0M Frequency M = MHz – / Calibration Tolerance at 25°C in ppm – / Frequency Stability over temperature range (±ppm) 200 Total Frequency Tolerance (±ppm) / H Temp. Range H = 25° to 200°C S = customer specified temp. range EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk