EURO QUARTZ CX1H CRYSTAL Miniature Crystal for Series Oscillators 10kHz to 600kHz FEATURES Frequency Range 10kHz to 600kHz High shock resistance Low ageing Designed for low power applications Full MIL testing available OUTLINE & DIMENSIONS DESCRIPTION CX1H crystals consist of a high quality tuning fork resonator in a rugged, hermetically sealed ceramic package. CX1H is intended for use in Series (two cascaded inverters) oscillator circuits. SPECIFICATION Specifications stated are typical at 25°C unless otherwise indicated. Specifications may change without notice. Frequency Range: 10.0kHz to 600.0kHz Standard Calibration Tolerance*: see table Motional Resistance (R1): Figure 1 Max = 10~169.9kHz, 2x typical 170~600kHz, 2.5x typical Motional Capacitance (C1): Figure 2 Quality Factor (Q): Figure 3 Min. is 0.25x typical Shunt Capacitance (C0): 2.0pF max. Drive Level 10~24.9kHz: 1.5µW max. 25~600.0kHz: 3.0µW max. Turning Point (T0)**: Figure 4 Temperature Coefficient (k): -0.035ppm/°C2 Ageing, first year: 5ppm max. Shock, survival***: 1,000g, 1ms, ½ sine Vibration, survival***: 20g rms, 10~2000Hz Operating Temperature Range Commercial: -10° to +70°C Industrial: -40° to +85°C Military: -55 to +125°C Storage Temperature Range: -55° to +125°C Maximum Process Temperature: See package handling notes STANDARD CALIBRATION TOLERANCE Frequency Range (kHz) 16~74.9 75~169.9 ±30ppm ±50ppm 170~249 ±100ppm 250~600 ±200ppm * Tighter frequency calibration is available. ** Other turning point is available *** Higher shock and vibration survival is available PACKAGING CX1Hcrystals are Tray Packed as standard. HOW TO ORDER CX1H LEADED CRYSTALS CX1H - S - 03 - Side Leads 'S' if special, custom design. 03 = Non RoHS Compliant Otherwise leave 05 = RoHS blank Compliant 32.768K, Frequency K = kHz 30 Calibration Tolerance @25°C (in ppm) / I Temp. Range C = -10° ~ +70°C I = -40° ~ +85°C M = -55° ~ +125°C S = Customer specified 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 EURO QUARTZ CX1H CRYSTAL Miniature Crystal for Series Oscillators CRYSTAL EQUIVALENT CIRCUIT R1 Motional Resistance C1 Motional Capacitance 10kHz to 600kHz FIGURE 1 CX1H Typical Motional Resistance R1 L1 Motional Inductance C0 Shunt Capacitance CONVENTIONAL SERIES OSCILLATOR CIRCUIT FIGURE 2 CX1H Typical Motional Capacitance C1 FIGURE 3 CX1H Typical Quality Factor (Q) Turning Point Temperature Note: Frequency f at temperature T is related to frequency F0 at turning point temperature To by: f-fo =k(T-To)2 fo PACKAGE HANDLING The CX crystal is hermetically sealed in a ceramic package. Normal handling and soldering precautions for small, low thermal mass parts are adequate when installing or testing CX crystals. CX crystals may be wave soldered with proper precaution taken to avoid desoldering the leads. A slow machine rate or too high a pre-heat temperature or solder bath temperature may damage the crystals. Lead to package solder interface temperature should not exceed 175°C, glass lid to package seal rim temperature should not exceed 210°C. If the seal rim reaches temperatures above the maximum specified, the package may lose its hermeticity. Loss of hermeticity results in a frequency decrease and motional resistance increase. FIGURE 4 CX1H Typical Turning Point Temperature (To) 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