EURO QUARTZ CX1V CRYSTAL Miniature Crystal for Pierce 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 CX1V crystals consist of a high quality tuning fork resonator in a rugged, hermetically sealed ceramic package. CX1V is intended for use in Pierce (single inverter) 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: 0.5µW max. 25~600.0kHz: 1.0µW max. Turning Point (T0)**: Figure 4 Temperature Coefficient (k): -0.035ppm/°C2 Ageing, first year: 5ppm max. Shock, survival***: 1,000g peak, 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 * Tighter frequency calibration is available. ** Other turning point is available *** Higher shock and vibration survival is available STANDARD CALIBRATION TOLERANCE Frequency Range (kHz) 16~74.9 75~169.9 ±30ppm ±50ppm 170~249 ±100ppm 250~600 ±200ppm LOAD CAPACITANCE (CL)* Frequency Range (kHz) PACKAGING 10~15.9 16~24.9 25~54.9 CX1V crystals are Tray Packed as standard Load Capacitance 11pF 10pF 9pF Frequency Range (kHz) 55~99.9 100~179.9 180~600 Load Capacitance 8pF 5pF 4pF * The load capacitance we use to calibrate CX1V. (Other CL is available.) HOW TO ORDER CX1V LEADED CRYSTALS CX1V - S - 03 - 32.768K, Side Leads 'S' if special, custom design. 03 = Non RoHS Compliant Otherwise leave 05 = RoHS blank Compliant 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 CX1V CRYSTAL Miniature Crystal for Pierce Oscillators CRYSTAL EQUIVALENT CIRCUIT R1 Motional Resistance C1 Motional Capacitance 10kHz to 600kHz FIGURE 1 CX1V Typical Motional Resistance R1 L1 Motional Inductance C0 Shunt Capacitance CONVENTIONAL CMOS PIERCE OSCILLATOR CIRCUIT FIGURE 2 CX1V Typical Motional Capacitance C1 Turning Point Temperature FIGURE 3 CX1V Typical Quality Factor (Q) 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 CX1V 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