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參數(shù)資料
| 型號： | CX4-SM5-600K,1000/C |
| 廠商： | EUROQUARTZ LTD |
| 元件分類： | 晶體 |
| 英文描述： | QUARTZ CRYSTAL RESONATOR, 0.6 MHz |
| 封裝： | LEAD FREE, HERMETIC SEALED, ULTRA MINIATURE, CERAMIC, SMD, 2 PIN |
| 文件頁數(shù)： | 2/2頁 |
| 文件大?。?/td> | 143K |
| 代理商： | CX4-SM5-600K,1000/C |
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001
info@euroquartz.co.uk
www.euroquartz.co.uk
EURO QUARTZ
CRYSTAL EQUIVALENT CIRCUIT
R1 Motional Resistance
L1 Motional Inductance
C1 Motional Capacitance
C0 Shunt Capacitance
TERMINATIONS - PLATING
SM1
Gold Plated (Lead Free)
SM2
Solder Plated
SM3
Solder Dipped
SM4
Solder Plated (Lead Free)
SM5
Solder Dipped (Lead Free)
Designation
Termination
TYPICAL APPLICATION FOR A
PIERCE OSCILLATOR
The low profile CX miniature crystal is ideal for use in 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 Pierce oscillator is
shown above. The crystal is effectively inductive and in a Pi network
circuit with CD and CG provides the additional phase shift to sustain
oscillation. The oscillation frequency (fO) is 15 to 250ppm above the
crystal's 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 amplifier's output resistance (RO). 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-induced capacitance 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
D
G
S
C
=
x
+
D
G
+
f O
S
1
L
= f
+
2(CO + C )
C1
Where
FS = Series resonant frequency of the crystal
C1 = Motional Capacitance
CO = Shunt Capacitance
CONVENTIONAL CMOS PIERCE OSCILLATOR CIRCUIT
CX4 CRYSTAL
Ultra-miniature Low Profile SMD
Fundamental Mode: 600kHz to 1.4MHz
Overtone: 1.8432MHz to 2.5MHz
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CX4SMAT | 制造商:EUROQUARTZ 制造商全稱:EUROQUARTZ limited 功能描述:Available with glass or cermic lid |
| CX4SM-AT | 制造商:RSG 制造商全稱:RSG 功能描述:14 MHz to 250 MHz Ultra-Miniature, Low Profile Surface Mount AT Quartz Crystal |
| CX4SSM1 | 制造商:RSG 制造商全稱:RSG 功能描述:Fundamental Mode: 600 kHz to 1.4 MHz Overtone: 1.8432 MHz - 2.5 MHz Ultra-Miniature Low Profile Surface Mount Quartz Crystal |
| CX4SSM2 | 制造商:RSG 制造商全稱:RSG 功能描述:14 MHz to 250 MHz Ultra-Miniature, Low Profile Surface Mount AT Quartz Crystal |
| CX4SSM3 | 制造商:RSG 制造商全稱:RSG 功能描述:Fundamental Mode: 600 kHz to 1.4 MHz Overtone: 1.8432 MHz - 2.5 MHz Ultra-Miniature Low Profile Surface Mount Quartz Crystal |
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