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CX-1C-03 Folha de dados(PDF) 2 Page - RSG Electronic Components GmbH |
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CX-1C-03 Folha de dados(HTML) 2 Page - RSG Electronic Components GmbH |
2 / 2 page 10130 - Rev B SPECIFICATIONS Specifications are typical at 25oC unless otherwise noted. Specifications are subject to change without notice. Frequency Range 530 kHz - 2.1 MHz Functional Mode Extensional Calibration Tolerance* A 0.05% ( 500ppm) B 0.1% C 1.0% Load Capacitance 7 pF Motional Resistance (R1)3 k MAX Motional Capacitance (C1) 1.2fF Quality Factor (Q) 150 k Shunt Capacitance (C0) 1.0 pF Drive Level 3 W MAX. Turning Point (TO)** 35 oC Temperature Coefficient (k) -0.035 ppm/ oC2 Note: Frequency (f) deviation from frequency (fO) @ turning point temperature (TO); Aging, first year 5ppm MAX. Shock 750g peak, 0.3 msec., 1/2 sine Vibration, survival 10g rms, 20-1,000 Hz random Operating Temperature -10 oC to +70oC Commercial -40 oC to +85oC Industrial -55 oC to +125oC Military Storage Temperature -55 oC to +125oC Max Process Temperature See package handling * Tighter frequency calibration available. ** Other turning point available. + _ + _ + _ + _ HOW TO ORDER CX-1-03 LEADED CRYSTALS CX-1 -03 1.0 MHz ( A / I ) “S” if special Blank=Glass Lid Side Calibration Temp. Range: or custom C=Ceramic Lid Leads Tolerance* C = Commercial design. Blank @ 25 0C I = Industrial if Std. (A) M = Military (B) S = Specify (C) *Other calibration fill in ppm. PACKAGING CX-1V-03 -Tray Pack (Standard) TYPICAL APPLICATION FOR A PIERCE OSCILLATOR The low profile CX miniature leaded crystal is ideal for small, high density, battery operated portable products. The CX 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 PI-network circuit with CD and CG provides the additional phase shift necessary to sustain oscillation. The oscillation frequency (fO) is 15 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 CX crystal calibration tolerance is influenced by the effective circuit capacitances, specified as the load capacitance (CL). CL is approximately equal to: 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 (fO) is approximately equal to: CL = CD x CG + CS CD + CG f-fO = k(T-TO) 2 (1) fO = fS [1+ C1 ] 2(C0 + CL) (2) Where f S = Series resonant frequency of the crystal C1 = Motional Capacitance C0 = Shunt Capacitance fO Frequency AMPLIFIER BUFFER C G C D R A CX-1 Contact factory for design guidelines OSC Freq (f ) O R f C S CONVENTIONAL CMOS PIERCE OSCILLATOR CIRCUIT RSG Electronic Components GmbH, Sprendlinger Landstr. 115, 63069 Offenbach, Germany, Tel. +49 69 - 984047-0, Fax: +49 69 - 9840-77, www.rsg-electronic.de |
Nº de peça semelhante - CX-1C-03 |
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Descrição semelhante - CX-1C-03 |
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