CX MINIATURE CRYSTALS CX-2H-SM EUROQUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] Web: www.euroquartz.co.uk Page 16kHz to 600kHz MINIATURE SMD CRYSTAL FOR SERIES OSCILLATORS 1 of 2 ! ! ! ! ! ! ! General Description The miniature CX-2H-SM quartz crystal is a high quality tuningfork resonator for use in series (two cascaded inverters) oscillators. The CX-2H-SM is hermetically sealed in a rugged, leadless ceramic package. The crystal has been designed for surfacemounting on printed circuit boards or hybrid circuits. The CX-2HSM crystal is manufactured using a photo-lithographic process, yielding consistently high quality production parts. A 2 I G Motional Capacitance (C1): Quality Factor (Q): Shunt Capacitance (C0): Drive Level: Outline CX-2-SM Package Dimensions Typical (mm) 6.60 B 2.39 2.74 C - see below D 0.89 1.14 E 1.50 1.75 F 1.27 1.52 G 2.67 2.92 H 3.94 4.19 I 5.33 5.59 Dimension “C” Glass Lid (mm max.) Turning Point (T0)**: Temperature Coefficient: Ageing, first year: Shock, survival***: Vibration, survival***: Operating Temperature: Maximum (mm) A 6.99 Storage Temperature: Process Temperature: Specifications are typical at 25°C unless otherwise indicated. * ** *** Ceramic Lid (mm max.) SM1 1.65 1.91 SM2 1.70 1.96 SM3 1.78 2.03 L1 C1 Tighter frequency calibration available Other turning point available Higher shock and vibration version available CX-1H-SM Crystal Calibration Tolerance at 25°C Calibration Equivalent Circuit 1 16kHz to 600kHz A, B or C (see table) Figure 1 Max.: 16 ~ 169.9kHz, 2x typ. 170~600kHz, 2.5x typ. Figure 2 Figure 3 Min. is 0.25x typ. 2.0pF max. 16~24.98kHz 1.5µW max. 25~600kHz 3.0µW max. Figure 4 -0.035ppm/°C2 ±5ppm max. 1,500g 0.3ms, ½ sine 10g rms, 20-2,000Hz random -10°~+70°C (commercial) -40°~+85°C (industrial) -55°~+125°C (military) -55°C~+125°C 260°C for 20 seconds H 3 F D B C E Terminal 1 is electrically connected to terminal 3 Dimension Specification Frequency Range: Calibration Tolerance*: Motional Resistance (R1): 1 (TOP) Miniature tuning-fork design High shock resistance Designed for low-power applications Compatible with hybrid or PC board packaging Low ageing Full military environmental testing available Ideal for battery operated applications R1 Frequency Range (kHz) 16~74.9 75~169.9 250~600 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% Solder Pad Layout 2 2.67 C0 2.87 R 1 Motional Resistance 170~249.9 L 1 Motional Inductance C 1 Motional Capacitance C0 Shunt Capacitance 1 2 0.6 CX MINIATURE CRYSTALS CX-2H-SM EUROQUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] Web: www.euroquartz.co.uk Page 16kHz to 600kHz MINIATURE SMD CRYSTAL FOR SERIES OSCILLATORS 2 of 2 Figure 2 - CX-2H Typical Motional Capacitance (C1) 5 Circuit Design C1 2 (fF) Conventional Series Oscillator Circuit 1.0 0.5 16 50 100 200 600 Frequency (kHz) Figure 3 - CX-2H Typical Quality Factor (Q) Oscillator Buffer 50 20 CX-1H Crystal 10 in '000s 5 Figure 1 - CX-2H Typical Motional Resistance (R1) 1000 2 500 16 50 100 200 600 Frequency (kHz) 200 R1 (k Figure 4 - CX-2H Typical Turning Point Temp. (°C) 100 W) +80 50 +70 +60 +50 20 10 +40 To(°C) +30 16 50 100 200 600 +20 + 10 Frequency (kHz) 0 - 10 -20 18 50 100 200 600 Frequency (kHz) Terminations Packaging Designation CX-2H-SM - Bulk Pack (Standard) - 16mm tape, 178mm or 330mm reels (Optional) per EIA 481 - Tray Pack (Optional) Termination SM1 Gold Plated SM2 Nickel, Solder Plated SM3 Nickel, Solder Plated and Solder Dipped Order Code CX-2H C = Ceramic Lid Blank = Glass Lid “S” if special or custom design Blank if standard Frequency -SM1 32.768kHz SM1 SM2 SM3 ( A Calibration Tolerance* @ 25°C A, B, C *For other calibration tolerances enter figure in ppm / I ) Temperature Range: C = Commercial I = Industrial M = Military S = Specify