CX MINIATURE CRYSTALS CX-1-03 EUROQUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] Web: www.euroquartz.co.uk Page 8MHz to 160MHz MINIATURE AT-CUT QUARTZ CRYSTAL 1 of 2 ! ! ! ! ! General Description The CX-1 quartz crystal is a high quality miniature AT-cut resonator. The CX-1 is hermetically sealed in a rugged, miniature ceramic package, a quarter of 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. Low-profile hermetically sealed package Excellent ageing characteristics Fundamental or 3rd Overtone mode High shock resistance Full military environmental testing available Specification 0.7 7.6 3.8 2.0 8.1 3.8 Outline and Dimensions Equivalent Circuit L1 1 C1 R1 C0 L 1 Motional Inductance C 1 Motional Capacitance C0 Shunt Capacitance R 1 Motional Resistance Standard Frequencies (MHz) 10.0 19.6608 32.0 11.0592 20.0 35.2512 12.0 24.0 36.0 14.318 24.576 40.0 16.0 30.0 8MHz to 160MHz A ±0.01% (±100ppm) B ±0.1% C ±1.0% 20pF (unless other required) Load Capacitance: See table Motional Resistance (R1): See table Motional Capacitance (C1): See table Quality Factor (Q): See table Shunt Capacitance (C0): 500mW max. Drive Level: -10° to +70°C (Commercial) Temperature Stability**: -40° to +85°C (Industrial) -55° to +125°C (Military) ±5ppm max. Ageing, first year: 3000g 0.3ms, ½ sine Shock, survival***: 20g rms 10-2,000Hz random Vibration, survival: -10°~+70°C (commercial) Operating Temperature: -40°~+85°C (industrial) -55°~+125°C (military) -55°C~+125°C Storage Temperature: Lead to Package temp. not to Process Temperature: exceed 175°C Glass lid to package seal rim temp. not to exceed 210°C 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 ** A higher shock version is available, refer to data sheet for the model CX-1HG Frequency Range: Calibration Tolerance*: 2 CX-1 Motional Parameters, Q and C0 Frequency Motional Motional Quality Shunt Resistance Capacitance Factor Capacitance C1 (fF) 000s C0 (pF) 80 2.2 R1 ( 10.0MHz W) 50 5.5 32MHz 20 7.8 36 2.6 155MHz 50 0.5 41 3.2 CX MINIATURE CRYSTALS CX-1-03 EUROQUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] Web: www.euroquartz.co.uk Page 8MHz to 160MHz MINIATURE AT-CUT QUARTZ CRYSTAL 2 of 2 Circuit Design Typical HCMOS Pierce Oscillator A conventional HCMOS Pierce oscillator is shown below. The crystal oscillates at a frequency f above the crystals seriesresonant frequency. The crystal is effectively inductive and in combination with R , C and C in the feedback loop, provides approximately 180° of the phase shift necessary to ensure oscillation. O F 1 2 Conventional HCMOS Pierce Oscillator Circuit Rf Amplifier CS C1 Buffer Osc. Freq. (Fo) RA CX-1 C2 Packaging CX-1-03 -Bulk Pack (Standard) Tray Pack (Optional) Order Code CX-1 O.T.=3rd O.T. Mode Blank = Fundamental Total Frequency Tolerance Frequency -03 Side leads “S” if special C = Ceramic Lid or custom designBlank = Glass Lid Blank if standard 32MHz ( A Calibration Tolerance* @ 25°C A, B, C / 25ppm / 50ppm / I Frequency Stability over Temperature Range *For other calibration tolerances enter figure in ppm ) Temperature Range: C = Commercial I = Industrial M = Military S = Specify