CX4V-C-SM2-32.768K100/C [EUROQUARTZ]

Quartz Crystal, QUARTZ CRYSTAL RESONATOR, 0.032768 MHz, LEADLESS, ULTRA MINIATURE, SMD, 2 PIN;


型号：	CX4V-C-SM2-32.768K100/C
厂家：	EUROQUARTZ LIMITED
描述：	Quartz Crystal, QUARTZ CRYSTAL RESONATOR, 0.032768 MHz, LEADLESS, ULTRA MINIATURE, SMD, 2 PIN 驱动晶体谐振器
文件：	总2页 (文件大小：146K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

QUARTZ

EURO

CX4VSM CRYSTAL

Ultra-Miniature SMD Crystal

30kHz to 250kHz

FEATURES

Frequency Range 30kHz to 250kHz

High shock resistance

Low ageing

OUTLINE & DIMENSIONS

Designed for low power applications

Full MIL testing available

DESCRIPTION

CX3VSM crystals are leadless devices designed for surface mounting

on PCBs or hybrid substrates. The crystals are intended for use in

Pierce (single inverter) oscillator circuits.

SPECIFICATION

Specifications stated are typical at 25°C unless otherwise indicated.

Specifications may change without notice.

Parameters

Fundamental

Overtone

200

2.4

Frequency (Hz):

32.768

100

Motional Resistance R1 (kΩ):

Motional Capacitance C1 (fF):

QualityFactor Q (k):

2.3

1.07

2.2

140

Load Capacitance (pF) :

Turning Point (°C) :

Standard Calibration Tolerance for 32.768kHz (2)

Glass Lid:

±30ppm

(0.003%)

±100ppm

(0.01%)

±1000ppm

(0.1%)

Glass Ceramic

Dim. H

Lid

Ceramic Lid:

±100ppm

(0.01%)

±1000ppm

(0.1%)

±10000ppm

(1.0%)

SM1

SM2

SM3

SM4

SM5

1.14

1.17

1.22

1.17

1.22

1.27

1.30

1.35

1.30

1.35

Drive Level:

0.5µW max.

-0.035ppm/°C

5ppm max.

Temperature Coefficient (k):

Ageing, first year:

Note: Frequency f at temperature T is related to frequency Fo at

turning point temperature To by:

f-fo

=k(T-To)

Shock, survival:

5000g, 0.3ms, ½ sine

Vibration, survival:

Operating Temperature Range

Commercial:

20g rms, 20~2000Hz random

-10° to +70°C

Industrial:

-40° to +85°C

Military:

-55 to +125°C

Storage Temperature Range:

Maximum Process Temperature:

-55° to +125°C

+260°C for 20 seconds

Other values available

Tighter tolerances available

PACKAGING OPTIONS

CX4VSM crystals are available either tray packed (<250pcs) or tape

and reel (>250 pieces).

16mm tape, 178mm or 330mm reels (EIA 418).

HOW TO ORDER CX4VSM CRYSTALS

CX4V - S

SM1 -

32.768K,

100 /

Calibration

Tolerance

@25°C

Frequency

K = kHz

Temp. Range

Blank = glass lid Terminations

C = ceramic lid SM1 = Gold plated *

SM2 = Solder plated

'S' if special,

C = -10° ~ +70°C

I = -40° ~ +85°C

M = -55° ~ +125°C

S = Customer specified

custom design.

Otherwise leave

blank

(in ppm)

SM3 = Solder dipped

SM4 = Solder plated *

SM5 = Solder dipped *

* = Lead free

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

QUARTZ

EURO

CX4VSM CRYSTAL

Ultra-Miniature SMD Crystal

30kHz to 250kHz

TYPICAL APPLICATION FOR A

PIERCE OSCILLATOR

CRYSTAL EQUIVALENT CIRCUIT

all, high

esigned

CX crystal d

r use in sm

roducts. The

l is ideal fo

d portable p

iature crysta

tery operate

file CX min

The low pro

density, bat

low current

rovides very

er) circuit p

ingle invert

oscillator (s

in a Pierce

illator is

network

sustain

l Pierce osc

and in a Pi

hase shift to

conventiona

stability. A

n and high

consumptio

shown above

ly inductive

l is effective

. The crysta

additional p

rovides the

C and C p

circuit with

oscillation.

crystal's res

R1 Motional Resistance

C1 Motional Capacitance

L1 Motional Inductance

C0 Shunt Capacitance

above the

to 250ppm

cy (f ) is 15

ion frequen

The oscillat

onant frequ

ency (f ).

Drive Leve

e divi

der

ing a voltag

evel by form

stal's drive l

limit the cry

R is used to

CONVENTIONAL CMOS PIERCE OSCILLATOR CIRCUIT

t changes in

ator agains

es the oscill

also stabiliz

and C . R

between R

d for

be increase

). R should

sistance (R

r's output re

ge operatio

the amplifie

higher volta

citance

tal calibrati

Load Capa

The CX crys

circuit capa

effective

ced by the

pacitance (

e is influen

on toleranc

ecified as t

C ). C is

he load ca

citances, sp

ely equal to

approximat

C_D

x C_G

C_S

C_L

C_G

Note: C and C include stray layout-induced capacitance to ground

and C is the stray shunt capacitance between the crystal terminal. In

practice, the effective value of C will be less than that calculated from

C , C and C values because of the effect of the amplifier output

resistance. C should be minimized.

The oscillation frequency (f ) is approximately equal to:

TERMINATIONS - PLATING

C₁

f_O

Designation

Termination

2(C_O

)

C_L

SM1

SM2

SM3

SM4

SM5

Gold Plated (Lead Free)

Solder Plated

Solder Dipped

Solder Plated (Lead Free)

Solder Dipped (Lead Free)

Where

F = Series resonant frequency of the crystal

C = Motional Capacitance

C = Shunt Capacitance

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