CX MINIATURE CRYSTALS CX-2V EUROQUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] Web: www.euroquartz.co.uk Page 1 of 2 10kHz to 600kHz MINIATURE QUARTZ CRYSTAL FOR PIERCE OSCILLATORS ! ! ! ! ! ! General Description The CX-2V quartz crystal is a high quality tuning fork resonator designed for use in Pierce (single inverter) oscillators. The CX-2V is hermetically sealed in a rugged, miniature ceramic package, a quarter the size of an eight pin dual-in-line package. The crystal is manufactured utilizing a photo-lithographic process, ensuring consistency and repeatability of electrical characteristics. Miniature tuning-fork design High shock resistance Designed for low-power applications Compatible with hybrid or PCB packaging Low ageing Full military environmental testing available Specification -02 End Lead 2.39 1 2 2.39 1 2 -04 Side Lead 6.60 3 3 1 2 -03 Side Lead 6.60 Frequency Range: Functional Mode: Calibration Tolerance*: 6.60 5.33 Motional Resistance (R1): 3 5.21 A 5.08 Motional Capacitance (C1): Quality Factor (Q): 2.54 1.27 Shunt Capacitance (C0): Drive Level: Outline and Dimensions Notes: 1. Terminal 1 is electrically connected to terminal 3. 2. Lead Dimensions: width 0.33mm typical, thickness 0.18mm. 3. A = Glass Lid - 2.03mm max. Ceramic Lid - 2.41mm max. Equivalent Circuit 1 L1 Storage Temperature: Process Temperature: C1 R1 2 Specifications are typical at 25°C unless otherwise indicated. * Closer calibration available ** Other turning point available C0 R 1 Motional Resistance Turning Point (T0)**: Temperature Coefficient (k): Ageing, first year: Shock, survival***: Vibration, survival***: Operating Temperature: 10kHz to 600kHz Tuning Fork (Flexure) A, B, or C (see table below) Figure 1 2x Typ. @ 16~24.9kHz 2.5x Typ. @25~600kHz Figure 2 Figure 3 (Minimum is 0.25x Typ.) 2.0pF max. 0.5µW max. @ 16~24.9kHz 1.0µW max. @ 25~600kHz Figure 4 -0.035ppm/°C2 ±5ppm max. 1,000g 1ms, ½ sine 10g rms 20 - 2,000Hz -10°~+70°C (commercial) -40°~+85°C (industrial) -55°~+125°C (military) -55°C~+125°C Lead to Package temp. not to exceed 175°C Glass lid to package seal rim temp. not to exceed 210°C L 1 Motional Inductance C 1 Motional Capacitance C0 Shunt Capacitance CX-2V Crystal Calibration Tolerance at 25°C Calibration Frequency Range (kHz) 16~74.9 75~169.9 170~249.9 250~600 A ±0.003% ±0.005% ±0.01% ±0.02% B ±0.01% ±0.01% ±0.02% ±0.05% C ±0.1% ±0.1% ±0.2% ±0.5% CX MINIATURE CRYSTALS CX-2V EUROQUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] Web: www.euroquartz.co.uk Page 10kHz to 600kHz MINIATURE QUARTZ CRYSTAL FOR PIERCE OSCILLATORS 2 of 2 Figure 1 - CX-2V Typical Motional Resistance (R1) Package Handling 300 200 R1 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. The crystals may be wave soldered, taking proper precautions to avoid desoldering the leads. A slow machine rate or too high a pre-heat temperature or solder bath temperature can damage the crystals. Lead to package solder interface temperature should not exceed 175°C, and glass lid to package seal rim temperature should not exceed 210°C. Should the seal rim temperature exceed these limits the package may lose its hermeticity. Loss of hermeticity results in a decrease of frequency and increase in motional resistance. 100 (k Ω ) 50 20 10 5 2 16 50 600 100 200 Frequency (kHz) Figure 2 - CX-2V Typical Motional Capacitance (C1) 5 Conventional HCMOS Pierce Oscillator Circuit C1 2 (fF) Rf Amplifier 1.0 Buffer 0.5 CS 16 Osc. Freq. (Fo) RA 50 100 200 600 Frequency (kHz) Figure 3 - CX-2V Typical Quality Factor (Q) C1 CX-2 C2 300 200 100 in '000s 50 Packaging CX-2V - Bulk Pack (Standard) Tray Pack (Optional) 20 16 50 100 200 600 Frequency (kHz) Figure 4 - CX-2V Typical Turning Point Temp. (°C) Order Code +80 +70 +60 +50 Frequency +40 To(°C) +30 CX-2V -03 32.768kHz (A / I) +20 + 10 0 Leads “S” if special 02 or custom design 03 Blank if standard 04 Calibration Tolerance* @ 25°C (A) (B) (C) *For other calibrations insert value in ppm Temperature Range: C = Commercial I = Industrial M = Military S = Specify - 10 -20 16 50 100 200 Frequency (kHz) f-fo k(T-To)2 = fo 600