EURO QUARTZ LHTAT OSCILLATORS Leaded High Temperature/High Shock 320kHz to 50MHz FEATURES High temperature operation up to 200°C Excellent stability over temperature High shock resistance CMOS output Through-hole leaded package - reduces mounting stress Robust lead attach-eutectic brazing process Gold plated Kovar leads OUTLINE & DIMENSIONS DESCRIPTION For applications with high operating temperatures such as downhole instrumentation, rotary shaft sensors and underground boring tools. SPECIFICATION Supply Voltage: Calibration Tolerance: Frequency Stability 25° ~ +150°C: 25° ~ +175°C: 25° ~ +200°C: Total Tolerance: Supply Current (Typical) 24MHz: 32MHz: 50MHz: Output Load (CMOS): Start-up Time: Rise/Fall Time: Duty Cycle: Ageing first year: Ageing: Shock Survival Standard: HG version: Vibration Survival: Operating Temp. Range: +3.3 ±10% ±50ppm or tighter as reqd. ±100ppm ±150ppm ±175ppm ±200ppm for 25° to 200°C 3.0mA 5.0mA 6.0mA 15pF 5ms max. 10ns typical 60/40% ±5ppm max. at 25°C ±100ppm max. at 200°C ENABLE/DISABLE OPTIONS (E/N) LHTAT 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. 5,000g, 0.3ms, ½ sine 30,000g, 0.3ms, ½ sine 20g, 10~2000Hz swept sine -55°C to 225°C ENABLE/DISABLE OPTION E - FUNCTION TABLE ABSOLUTE MAXIMUM RATINGS Supply Voltage: Maximum Process Temperature: Storage Temperature: Enable (Pin1 High*) Disable (Pin 1 Low) Frequency Output High Z state Output -0.5V to +4.0V 260°C for 20 seconds -55° to +125°C Oscillator Current Oscillates Stops Normal Very low PACKAGING LHTAT oscillators are supplied tube packed. HOW TO ORDER LHTAT OSCILLATORS LHTAT 4 Supply Voltage 4 = 3.3V A Shock Level A = 5000g B = 10000g C = 20000g D = 30000g E Enable/Disable option E or N SM1 - Terminations Blank = SM1 = Gold plated SM5 = Solder dipped (lead free) 20.0M – Frequency M = MHz k = kHz Calibration Tolerance at 25°C (in ±ppm) OR 50 Calibration Tolerance at 25°C (in ±ppm) / – / 200 / Frequency Stability over temperature range (in ±ppm) / 175 Frequency Stability over temp. range (in ±ppm) Total Frequency Tolerance (±ppm) / Total Frequency Tolerance (±ppm) H Temp. Range H = 25° to 200°C S = customer specified temp. range / 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