CX-2HC-SM232.768B

CX MINIATURE CRYSTALS 16kHz to 600kHz MINIATURE SMD CRYSTAL FOR SERIES OSCILLATORS EURO QUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk Web: www.euroquartz.co.uk CX-2H-SM CX-2H-SM Page 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.        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 Specification Frequency Range: Calibration Tolerance*: Motional Resistance (R): 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/°C ±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 1 (TOP) A I G 2 H 3F D Outline B C E Terminal 1 is electrically connected to terminal 3 Motional Capacitance (C): Quality Factor (Q): Shunt Capacitance (C): Drive Level: Turning Point (T)**: Temperature Coefficient: Ageing, first year: Shock, survival***: Vibration, survival***: Operating Temperature: Storage Temperature: Process Temperature: CX-2-SM Package Dimensions Dimension Typical (mm) Maximum (mm) A B C D E F G H I Dimension “C” 6.60 2.39 0.89 1.50 1.27 2.67 3.94 5.33 Glass Lid (mm max.) 6.99 2.74 see below 1.14 1.75 1.52 2.92 4.19 5.59 Ceramic Lid (mm max.) Specifications are typical at 25°C unless otherwise indicated. * ** *** Tighter frequency calibration available Other turning point available Higher shock and vibration version available CX-1H-SM Crystal Calibration Tolerance at 25°C Calibration SM1 SM2 SM3 1.65 1.70 1.78 1.91 1.96 2.03 Frequency Range (kHz) 16~74.9 75~169.9 170~249.9 250~600 A B C ±0.003% ±0.01% ±0.1% ±0.005% ±0.01% ±0.1% ±0.01% ±0.02% ±0.2% ±0.02% ±0.05% ±0.5% Equivalent Circuit L1 R1 1 C1 C0 2 Solder Pad Layout 2.67 2.87 1 2 0.6 R 1 Motional Resistance L 1 Motional Inductance C 1 Motional Capacitance C0 Shunt Capacitance CX MINIATURE CRYSTALS 16kHz to 600kHz MINIATURE SMD CRYSTAL FOR SERIES OSCILLATORS EURO QUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk Web: www.euroquartz.co.uk CX-2H-SM Page 2 of 2 Figure 2 - CX-2H Typical Motional Capacitance (C) 5 Circuit Design Conventional Series Oscillator Circuit C1 (fF) 2 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 Figure 1 - CX-2H Typical Motional Resistance (R) 1000 500 5 2 16 50 1 00 200 600 Frequency (kH z) 200 R1 (k 100 9) 50 Figure 4 - CX-2H Typical Turning Point Temp. (°C) +80 +70 +60 20 10 +50 +40 To(°C) +30 16 50 100 200 600 +20 + 10 0 - 10 -20 18 50 100 200 600 Frequency (kHz) Frequency (kHz) Terminations Packaging CX-2H-SM - Bulk Pack (Standard) - 16mm tape, 178mm or 330mm reels (Optional) per EIA 481 - Tray Pack (Optional) Designation Termination SM1 SM2 SM3 Gold Plated Nickel, Solder Plated Nickel, Solder Plated and Solder Dipped Order Code CX-2H C = Ceramic Lid Blank = Glass Lid Frequency -SM1 32.768kHz SM1 SM2 SM3 (A Calibration Tolerance* @ 25°C A, B, C / I ) “S” if special or custom design Blank if standard *For other calibration tolerances enter figure in ppm Temperature Range: C = Commercial I = Industrial M = Military S = Specify