数据搜索系统,热门电子元器件搜索 |
|
CX4 数据表(PDF) 2 Page - EUROQUARTZ limited |
|
CX4 数据表(HTML) 2 Page - EUROQUARTZ limited |
2 / 2 page 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 C C C 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 |
类似零件编号 - CX4 |
|
类似说明 - CX4 |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |