CX-1HGSM332A

CX MINIATURE CRYSTALS 8MHz to 160MHz MINIATURE AT-CUT SMD CRYSTAL HIGH SHOCK EURO QUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk Web: www.euroquartz.co.uk CX-1HG-SM CX-1HG-SM Page 1 of 2  General Description The miniature CX-1HG-SM AT-cut crystals in leadless ceramic packages have been designed for surface-mounting on printed circuit boards or hybrid circuits. These crystals are designed for applications requiring exceptional shock and vibration survival.      Surface-mount - infrared, vapour phase, wave solder or epoxy mount techniques Low profile, hermetically sealed package Available with glass or ceramic lid High shock and vibration resistance Custom designs available Full military environmental testing available Specification D (TO P) Frequency Range: Calibration Tolerance*: Load Capacitance: Motional Resistance (R): Motional Capacitance (C): Quality Factor (Q): Shunt Capacitance (C): Drive Level: Temperature Stability**: Ageing, first year: Shock, survival: Vibration, survival: Operating Temperature: Storage Temperature: Process Temperature: A E D B C E Outline CX-1-SM Package Dimensions Dimension Typical (mm) Maximum (mm) 8MHz to 160MHz A ±0.01% (±100ppm) B ±0.1% C ±1.0% 20pF (unless other required) See table See table See table See table 500mW max. -10° to +70°C from ±10ppm -40° to +85°C from ±20ppm -55° to +125°C from ±30ppm ±5ppm max. 10,000g 0.2ms, ½ sine 50g rms 10-2,000Hz random A B C D E Dimension “C” 8.00 3.56 1.14 1.52 Glass Lid (mm max.) 8.38 3.94 see below 1.40 1.78 Ceramic Lid (mm max.) -10°~+70°C (commercial) -40°~+85°C (industrial) -55°~+125°C (military) -55°C~+125°C 260°C for 20 seconds Specifications are typical at 25°C unless otherwise indicated. The characteristics of the frequency stability parameter follow that of AT-cut, thickness-shear mode crystals. * ** Closer calibration available, as low as ±5ppm Does not include calibration tolerance SM1 SM2 SM3 1.65 1.70 1.78 1.78 1.83 1.90 CX-1 Motional Parameters, Q and C Motional Frequency Resistance R ( Motional Capacitance C (fF) Quality Factor ‘000s Shunt Capacitance C (pF) Equivalent Circuit L R 1 C C 2 9) 10.0MHz 32MHz 155MHz 50 20 50 5.5 7.8 0.5 80 36 41 2.2 2.6 3.2 R  Motional Resistance L  Motional Inductance C  Motional Capacitance C Shunt Capacitance CX MINIATURE CRYSTALS 8MHz to 160MHz MINIATURE AT-CUT SMD CRYSTAL HIGH SHOCK EURO QUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk Web: www.euroquartz.co.uk CX-1HG-SM Page 2 of 2 Circuit Design Designation Termination Terminations Typical HCMOS Pierce Oscillator A conventional HCMOS Pierce oscillator is shown below. The crystal oscillates at a frequency fO above the crystal’s seriesresonant frequency. The crystal is effectively inductive and in combination with RF, C1 and C2 in the feedback loop, provides approximately 180° of the phase shift necessary to ensure oscillation. SM1 SM2 SM3 Gold Plated Nickel, Solder Plated Nickel, Solder Plated and Solder Dipped Packaging CX-1-SM - Bulk Pack (Standard) - 16mm tape, 178mm or 330mm reels (Optional) per EIA 481 - Tray Pack (Optional) Conventional HCMOS Pierce Oscillator Circuit RB Amplifier Buffer Osc. Freq. (Fo) C5 R) Suggested Solder Pad Layout C CX-1 C 1.78 4.06 6.86 Order Code CX-1 O.T.=3rd O.T. Mode Blank = Fundamental Frequency Total Frequency Tolerance HG SM1 32MHz (A Calibration Tolerance* @ 25°C A, B, C / 25ppm / 50ppm / I Frequency Stability over Temperature Range ) “S” if special or custom design Blank if standard SM1 C = Ceramic Lid Blank = Glass Lid SM2 SM3 *For other calibration tolerances enter figure in ppm Temperature Range: C = Commercial I = Industrial M = Military S = Specify