CX-6C-SM2FREQ(A/C) [EUROQUARTZ]

Parallel - Fundamental Quartz Crystal, 0.8MHz Min, 1.35MHz Max, HERMETICALLY SEALED, MINIATURE, CERAMIC, LEADLESS, SMD, 2 PIN;


型号：	CX-6C-SM2FREQ(A/C)
厂家：	EUROQUARTZ LIMITED
描述：	Parallel - Fundamental Quartz Crystal, 0.8MHz Min, 1.35MHz Max, HERMETICALLY SEALED, MINIATURE, CERAMIC, LEADLESS, SMD, 2 PIN 驱动晶体谐振器
文件：	总2页 (文件大小：98K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

CX MINIATURE CRYSTALS

EUROQUARTZ

CX-6V-SM

800kHz ttoo 11..3355MMHHzz

Telephone:

Fax:

+44(0)1460 230000

+44(0)1460 230001

sales@euroquartz.co.uk

www.euroquartz.co.uk

Page

1 of 2

Email:

Web:

UULLTTRRAA--LLOOWW PPRROOFFIILLEE

MMIINNIIAATTUURREE SSMMDD CCRRYYSSTTAALL

Ultra-low profile (1mm)

Extensional mode

Ideal for use with microprocessors

Designed for low power applications

Compatible with hybrid or PCB packaging

Low ageing

Full military environmental testing available

Ideal for battery operated applications

General Description

The CX-6-SM quartz crystals are leadless devices designed for

surface mounting on printed circuit boards or hybrid substrates.

The crystals are intended for use in Pierce oscillators. Hermetically

sealed in a miniature ceramic package, the crystals are produced

utilizing a photo-lithographic process ensuring consistent high

quality production units.

Specification

Frequency Range:

Functional Mode:

Calibration Tolerance*:

800kHz to 1.35MHz

Extensional

±0.05% (±500ppm

±0.1%

±1.0%

Load Capacitance:

7pF

Motional Resistance (R ):

Motional Capacitance (C ):

Quality Factor (Q):

Shunt Capacitance (C ):

Drive Level:

Turning Point (T )**:

Temperature Coefficient (k):

Note: frequency (f) deviation from frequency (f0) at turning point

5k max.

1.2fF

150k

Outline

1.0pF

3 W max.

35°C

CX-6-SM Package Dimensions

-0.035ppm/°C

Typical

(mm)

Maximum

(mm)

Dimension

temperature =

f-fo

k(T-To)

Ageing, first year:

Shock, survival:

Vibration, survival:

Operating Temperature:

±5ppm max.

6.73

2.62

7.11

2.90

1000g peak, 0.3ms, ½ sine

10g rms 20-1,000Hz random

-10°~+70°C (commercial)

-40°~+85°C (industrial)

-55°~+125°C (military)

-55°C~+125°C

see below

1.52

1.27

Storage Temperature:

Process Temperature:

260°C for 20 sec.

Dimension

“C”

Glass Lid

(mm max.)

Ceramic Lid

(mm max.)

Specifications are typical at 25°C unless otherwise indicated.

SM1

SM2

SM3

0.99

1.04

1.12

1.35

1.40

1.47

Closer calibration available

Other Turning Point available

Equivalent Circuit

Motional Resistance

Motional Capacitance

Motional Inductance

Shunt Capacitance

CX MINIATURE CRYSTALS

EUROQUARTZ

Telephone:

CX-6V-SM

800kHz ttoo 11..3355MMHHzz

+44(0)1460 230000

Page

Fax:

Email:

Web:

+44(0)1460 230001

sales@euroquartz.co.uk

www.euroquartz.co.uk

2 of 2

UULLTTRRAA--LLOOWW PPRROOFFIILLEE

MMIINNIIAATTUURREE SSMMDD CCRRYYSSTTAALL

Conventional HCMOS Pierce Oscillator Circuit

Circuit Design

Amplifier

Buffer

Typical Pierce Oscillator Application

Osc.

Freq. (Fo)

The low profile CX miniature surface-mount crystal is ideal for small,

battery operated portable products. The CX crystal designed in a

Pierce oscillator (single inverter) circuit has a very low current

consumption with high stability. A conventional HCMOS Pierce

oscillator circuit is shown below. The crystal is effectively inductive

and in a Pi network with C and C which provides the additional

phase-shift necessary to sustain oscillation. The oscillation frequency

(f ) is 15ppm to 150ppm above the crystal’s series resonant

frequency (F ).

CX-2

Solder Pad Layout

1.78

Drive Level

R is used to limit the crystal’s drive level by forming a voltage

divider between R and C . R also stabilizes the oscillator against

changes in the amplifiers output resistance (R ). R should be

increased for higher voltage operation.

3.05

5.46

Load Capacitance

The CX crystal calibration tolerance is influenced by the effective

Terminations

circuit capacitances, specified as the load capacitance (C .) C is

approximately equal to:

C x C

C + C

Termination

Designation

NOTE: C and C include stray layout capacitance to ground. C is

the stray shunt capacitance between the crystal terminals. In

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

from C , C , and CS values due to the effect of the amplifier output

resistance. C should be minimized.

SM1

SM2

SM3

Gold Plated

Nickel, Solder Plated

Nickel, Solder Plated and Solder Dipped

The oscillation frequency (f ) is approximately equal to:

2(C + C )

Where F = Series resonant frequency of the crystal

C = Motional Capacitance

C = Shunt Capacitance

Packaging

CX-6V-SM- Tray Pack (Standard)

16mm tape, 178mm or 330mm reels

(Optional) per EIA 481

Order Code

C = Ceramic Lid

Blank = Glass Lid

Frequency

CX-6

( A /

I )

-SM1

1.0MHz

Temperature

Range:

C = Commercial

I = Industrial

M = Military

S = Specify

“S” if special

or custom design

Blank if standard

SM1

SM2

SM3

Calibration

Tolerance*

@ 25°C

A, B, C

*For other calibration

tolerances enter

figure in ppm

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