CX4VSM CRYSTAL 30 kHz to 200 kHz 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. actual size side view Glass Lid Shown PACKAGE DIMENSIONS D FEATURES Ultra-miniature, surface mount design Available with glass or ceramic lid Hermetically sealed ceramic package TOP A BOTTOM F Quartz crystal tuning fork design High shock and vibration survival Excellent aging characteristics Designed for low power applications B E D C Full military testing available Designed and manufactured in the USA TYP. MAX. DIM inches mm inches mm A 0.197 5.00 0.210 5.33 B 0.072 1.83 0.085 2.16 Smart Card C - - D 0.036 0.91 0.046 1.16 Transponder / Animal Migration E 0.020 0.51 - - Space Limited Devices F 0.025 0.64 - - APPLICATIONS Medical Implantable and Non-Implantable Devices Military Devices Handheld Battery Operated Devices DIM “C” Down Hole / Industrial Instrumentation Computer / Computer Peripherals GLASS LID see below CERAMIC LID MAX inches mm inches mm SM1 0.045 1.14 0.050 1.27 SM2 0.046 1.17 0.051 1.30 SM3 0.048 1.22 0.053 1.35 SUGGESTED LAND PATTERN 0.059 (1.5) EQUIVALENT CIRCUIT C0 0.092 (2.3) 1 L1 C1 R1 0.160 (4.0) inches (mm) 10103 - Rev C IS O RSG Electronic Components GmbH - Sprendlinger Landstr. 115 - 63069 Offenbach - Germany - www.rsg-electronic.de YS 90 01 ERT T E M C IFIC T A N IO S R1 Motional Resistance L1 Motional Inductance C1 Motional Capacitance C0 Shunt Capacitance 2 TYPICAL APPLICATION FOR A PIERCE OSCILLATOR SPECIFICATIONS Specifications are typical at 25OC unless otherwise noted. Specifications are subject to change without notice. Parameters Fundamental Overtone 32.768 100 200 Motional Resistance R1(kΩ) Frequency, (kHz) 50 18 2.4 Motional Capacitance C1 (fF) 2.3 1.07 2.2 Quality Factor Q (k) 40 85 140 Shunt Capacitance C0 (pF) 1.1 0.7 1.2 9 8 5 25 10 29 Load Capacitance (pF)* o Turning Point ( C)* Standard Calibration Tolerance** Glass Lid: + _ 30 ppm (0.003%) + _ Ceramic Lid: + _ + _ 100 ppm (0.01%) 100 ppm (0.01%) + _ 1000 ppm (0.1%) 1000 ppm (0.1%) + _ 10000 ppm (1.0%) 0.5 µW MAX Drive Level 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 5,000 g peak, 0.3 ms, 1/2 sine Vibration, survival 20 g RMS, 10-2,000 Hz random Operating Temp. Range -10OC to +70OC (Commercial) -40OC to +85OC (Industrial) -55OC to +125OC (Military) Storage Temp. Range -55OC to +125OC Max Process Temperature 260OC for 20 sec. 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 = TERMINATIONS CD x CG CD + CG (1) + CS 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 * Other values available ** Tighter tolerances available Designation SM1 SM2 SM3 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). C1 2(C0 + CL) ] (2) = Series resonant frequency of the crystal = Motional Capacitance = Shunt Capacitance CONVENTIONAL CMOS PIERCE OSCILLATOR CIRCUIT Termination Gold Plated Solder Plated Solder Dipped Rf BUFFER PACKAGING OPTIONS CX4VSM - Tray Pack AMPLIFIER - 16mm tape, 7” or 13” reels RA OSC Freq (fO ) (Reference tape and reel data sheet 10109) HOW TO ORDER CX4VSM CRYSTALS CX4V S C SM1 C = Ceramic Lid Blank = Glass Lid Frequency K = kHz SM1 = Gold Plated SM2 = Solder Plated SM3 = Solder Dipped Calibration Tolerance @25OC (in ppm) / I Operating Temp. Range: C = -10OC to +70OC I = -40OC to +85OC M = -55OC to +125OC S = Customer Specified CG CX4 XTAL CD 10103 - Rev C IS O RSG Electronic Components GmbH - Sprendlinger Landstr. 115 - 63069 Offenbach - Germany - www.rsg-electronic.de YS 90 01 ERT T E M C IFIC T A N IO S “S” if special or custom design. Blank if standard 32.768K , 100