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| CX4VSM CRYSTAL 30 kHz to 200 kHz TM Ultra-Miniature Low Profile Surface Mount Quartz Crystal DESCRIPTION STATEK's ultra-miniature CX4VSM quartz crystals are hermetically sealed in surface mount ceramic packages and custom laser-tuned to frequencies ranging from 30 kHz to 200 kHz. This high quality tuning fork resonator is intended for use in Pierce (single inverter) oscillators with a maximum process temperature not to exceed 260OC. FEATURES actual size side view Glass Lid Shown PACKAGE DIMENSIONS D Ultra-miniature, surface mount design Available with glass or ceramic lid Hermetically sealed ceramic package Quartz crystal tuning fork design High shock and vibration survival Excellent aging characteristics Designed for low power applications Full military testing available Designed and manufactured in the USA TYP. APPLICATIONS B C D E A TOP F BOTTOM MAX. mm 5.00 1.83 0.91 0.51 0.64 inches 0.210 0.085 0.046 CERAMIC LID inches 0.050 0.051 0.053 mm 1.27 1.30 1.35 mm 5.33 2.16 1.16 - DIM A B C D E F DIM "C" MAX SM1 SM2 SM3 inches 0.197 0.072 0.036 0.020 0.025 Medical Implantable and Non-Implantable Devices Military Devices Smart Card Transponder / Animal Migration Space Limited Devices Handheld Battery Operated Devices Down Hole / Industrial Instrumentation Computer / Computer Peripherals see below GLASS LID inches 0.045 0.046 0.048 mm 1.14 1.17 1.22 SUGGESTED LAND PATTERN EQUIVALENT CIRCUIT 0.059 (1.5) C0 0.092 (2.3) 1 L1 C1 R1 2 0.160 (4.0) inches (mm) 10103 - Rev C S R1 Motional Resistance L1 Motional Inductance C1 Motional Capacitance C0 Shunt Capacitance YS ERTI FI TE M C CT A N IO RSG Electronic Components GmbH - Sprendlinger Landstr. 115 - 63069 Offenbach - Germany - www.rsg-electronic.de IS O 90 01 SPECIFICATIONS TYPICAL APPLICATION FOR A PIERCE OSCILLATOR Specifications are typical at 25OC unless otherwise noted. Specifications are subject to change without notice. Parameters Fundamental Overtone Frequency, (kHz) Motional Resistance R1(k) Motional Capacitance C1 (fF) Quality Factor Q (k) Shunt Capacitance C0 (pF) Load Capacitance (pF)* Turning Point ( C)* Standard Calibration Tolerance** Glass Lid: Ceramic Lid: Drive Level 30 ppm (0.003%) + _ + _ + _ o 32.768 50 2.3 40 1.1 9 25 100 18 1.07 85 0.7 8 10 200 2.4 2.2 140 1.2 5 29 The CX4 family of surface mount crystals are ideal for small, high density, battery operated portable products. The CX4 crystal designed in a Pierce oscillator (single inverter) circuit provides very low current consumption and high stability. A conventional CMOS Pierce oscillator circuit is shown below. The crystal is effectively inductive and in a PInetwork circuit with CD and CG provides the additional phase shift necessary to sustain oscillation. The oscillation frequency (f0) is 50 to 150 ppm above the crystal's series resonant frequency (fS). Drive Level RA is used to limit the crystal's drive level by forming a voltage divider between RA and CD. RA also stabilizes the oscillator against changes in the amplifiers output resistance (R0). RA should be increased for higher voltage operation. Load Capacitance The CX4 crystal calibration tolerance is influenced by the effective circuit capacitances, specified as the load capacitance (CL). CL is approximately equal to: CL = CD x CG CD + CG + CS 100 ppm (0.01%) 1000 ppm (0.1%) + _ 1000 ppm (0.1%) 10000 ppm (1.0%) 100 ppm (0.01%) + _ + _ 0.5 W MAX Temperature Coefficient (k) -0.035 ppm/OC2 Note: Frequency f at temperature T is related to frequency f0 at turning point temperature T0 by: f-f0 2 = k(T-T0) f0 Aging, first year 5 ppm Shock, survival Vibration, survival Operating Temp. Range 5,000 g peak, 0.3 ms, 1/2 sine 20 g RMS, 10-2,000 Hz random -10OC to +70OC (Commercial) -40OC to +85OC (Industrial) -55OC to +125OC (Military) -55OC to +125OC 260OC for 20 sec. (1) NOTE: CD and CG include stray layout to ground and CS is the stray shunt capacitance between the crystal terminal. In practice, the effective value of CL will be less than that calculated from CD, CG and CS values because of the effect of the amplifier output resistance. CS should be minimized. The oscillation frequency (f0) is approximately equal to: f0 = fS 1 + Where f S C1 C0 C1 2(C0 + CL) Storage Temp. Range Max Process Temperature * Other values available ** Tighter tolerances available [ ] (2) = Series resonant frequency of the crystal = Motional Capacitance = Shunt Capacitance TERMINATIONS CONVENTIONAL CMOS PIERCE OSCILLATOR CIRCUIT Designation SM1 SM2 SM3 CX4VSM Termination Gold Plated Solder Plated Solder Dipped - Tray Pack - 16mm tape, 7" or 13" reels (Reference tape and reel data sheet 10109) Rf BUFFER OSC Freq (fO ) PACKAGING OPTIONS AMPLIFIER RA HOW TO ORDER CX4VSM CRYSTALS CX4V S C C = Ceramic Lid Blank = Glass Lid "S" if special or custom design. Blank if standard SM1 32.768K , 100 Frequency K = kHz Calibration Tolerance @25OC (in ppm) / I CG SM1 = Gold Plated SM2 = Solder Plated SM3 = Solder Dipped Operating Temp. Range: C = -10OC to +70OC I = -40OC to +85OC M = -55OC to +125OC S = Customer Specified CX4 XTAL CD 10103 - Rev C S YS ERTI FI TE M C CT A N IO RSG Electronic Components GmbH - Sprendlinger Landstr. 115 - 63069 Offenbach - Germany - www.rsg-electronic.de IS O 90 01 |
Price & Availability of CX4VSM
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