LHTAT EUROQUARTZ | Alldatasheet
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Technical content
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE EURO QUARTZ
DESCRIPTION
For applications with high operating temperatures such as downhole instrumentation, rotary shaft sensors and underground boring tools. Supply Voltage: +3.3 ±10% Calibration Tolerance: ±50ppm or tighter as reqd. Frequency Stability Total Tolerance: ±200ppm for 25° to 200°C Supply Current (Typical) 24MHz: 3.0mA 32MHz: 5.0mA 50MHz: 6.0mA 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: 5,000g, 0.3ms, ½ sine HG version: 30,000g, 0.3ms, ½ sine Vibration Survival: 20g, 10~2000Hz swept sine Operating Temp. Range: -55°C to 225°C SPECIFICATION
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 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. LHTAT OSCILLATORS HOW TO ORDER LHTAT OSCILLATORS LHTAT 4 A E SM1 - 20.0M – / – / 200 / H Enable/Disable option E or N Terminations Blank = SM1 = Gold plated SM5 = Solder dipped (lead free) Frequency M = MHz k = kHz Calibration Tolerance at 25°C (in ±ppm) Total Frequency Tolerance (±ppm) Temp. Range H = 25° to 200°C S = customer specified temp. range Leaded High Temperature/High Shock Shock Level A = 5000g B = 10000g C = 20000g D = 30000g ENABLE/DISABLE OPTIONS (E/N) Supply Voltage 4 = 3.3V Frequency Stability over temperature range (in ±ppm) OUTLINE & DIMENSIONS 320kHz to 50MHz ENABLE/DISABLE OPTION E - FUNCTION TABLE Enable (Pin1 High*) Disable (Pin 1 Low) Output Frequency Output High Z state Oscillator Oscillates Stops Current Normal Very low PACKAGING LHTAT oscillators are supplied tube packed. Supply Voltage: -0.5V to +4.0V Maximum Process Temperature: 260°C for 20 seconds Storage Temperature: -55° to +125°C ABSOLUTE MAXIMUM RATINGS 50 / 175 / - / H OR Calibration Tolerance at 25°C (in ±ppm) Total Frequency Tolerance (±ppm) Temp. Range H = 25° to 200°C S = customer specified temp. range Frequency Stability over temp. range (in ±ppm)