CX2SM1-1.0M,1000/C [STATEK]

Parallel - Fundamental Quartz Crystal, 1MHz Nom, LEAD FREE, HERMETIC SEALED, MINIATURE, CERAMIC PACKAGE-3;


型号：	CX2SM1-1.0M,1000/C
厂家：	STATEK CORPORATION
描述：	Parallel - Fundamental Quartz Crystal, 1MHz Nom, LEAD FREE, HERMETIC SEALED, MINIATURE, CERAMIC PACKAGE-3
文件：	总2页 (文件大小：171K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

CX2SM CRYSTAL

760 kHz to 1.35 MHz

Low Profile Miniature Surface Mount Quartz Crystal

DESCRIPTION

actual size

side view

The CX2SM quartz crystals are leadless devices designed

for surface mounting on printed circuit boards or hybrid

substrates. They are hermetically sealed in a rugged,

miniature ceramic package. They are manufactured using

the STATEK-developed photolithographic process, and

were designed utilizing the experience acquired by

producing millions of crystals for industrial, commercial,

military and medical applications. Maximum process

temperature should not exceed 260^OC.

Glass Lid Shown

PACKAGE DIMENSIONS

FEATURES

Extensional mode

Ideal for use with microprocessors

Designed for low power applications

Compatible with hybrid or PC board

Low aging

Full military testing available

Ideal for battery operated applications

Designed and manufactured in the USA

TYP.

MAX.

EQUIVALENT CIRCUIT

DIM

inches

6.60

2.39

inches

C₀

0.260

0.094

0.275

0.108

6.99

2.74

see below

L₁

C₁

R₁

0.035

0.059

0.050

0.105

0.155

0.210

0.89

1.50

1.27

2.67

3.94

5.33

0.045

1.14

1.75

1.52

2.92

4.19

5.59

0.069

0.060

0.115

0.165

0.220

R₁Motional Resistance L₁Motional Inductance

C₁Motional Capacitance C₀Shunt Capacitance

SUGGESTED LAND PATTERN

DIM “C”

MAX

GLASS LID

CERAMIC LID

inches

1.65

1.70

1.78

inches

1.91

1.96

2.03

0.105 (2.67)

SM1

0.065

0.067

0.070

0.075

0.077

0.080

SM2/SM4

SM3/SM5

GRID

COURTYARD

0.113

(2.87)

Note: Terminal 1 is electrically connected internally to terminal 3

0.060 (1.52)

inches (mm)

0.060 (1.52)

10135 - Rev C

STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com

TYPICAL APPLICATION

FOR A PIERCE OSCILLATOR

SPECIFICATIONS

Specifications are typical at 25^OC unless otherwise noted.

Specifications are subject to change without notice.

The low profile CX miniature surface mount 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 C_Dand C_Gprovides the

additional phase shift necessary to sustain oscillation. The

oscillation frequency (f₀) is 15 to 150 ppm above the

crystal’s series resonant frequency (f_S).

Frequency Range

Functional Mode

760 kHz - 1.35 MHz

Extensional

⁺^_500 ppm (0.05%)

⁺^_1000 ppm (0.1%)

⁺^_10000 ppm (1.0%)

7 pF

Calibration Tolerance¹

Load Capacitance

Motional Resistance (R₁)

5 kΩ MAX

Drive Level

Motional Capacitance (C₁) 1.2fF

R_Ais used to limit the crystal’s drive level by forming a

voltage divider between R_Aand C_D. R_Aalso stabilizes the

oscillator against changes in the amplifiers output

resistance (R₀). R_Ashould be increased for higher

voltage operation.

Quality Factor (Q)

Shunt Capacitance (C₀)

Drive Level

150 k

1.0 pF

W MAX

35^OC

Turning Point (T )²

Temperature Coefficient (k) -0.035 ppm/^OC²

Aging, first year

Shock, survival

Vibration, survival

Operating Temp. Range

Load Capacitance

5 ppm MAX

1000 g, 0.3 ms,¹/₂sine

10 g RMS, 20-1,000 Hz random

-10^OC to +70^OC (Commercial)

-40^OC to +85^OC (Industrial)

-55^OC to +125^OC (Military)

-55^OC to +125^OC

The CX crystal calibration tolerance is influenced by the

effective circuit capacitances, specified as the load

capacitance (C_L). C_Lis approximately equal to:

C_Dx C_G

(1)

C_L

C_S

C_D+ C_G

NOTE: C_Dand C_Ginclude stray layout to ground and C_S

is the stray shunt capacitance between the crystal

terminal. In practice, the effective value of C_Lwill be less

than that calculated from C_D, C_Gand C_Svalues because

of the effect of the amplifier output resistance. C_Sshould

be minimized.

Storage Temp. Range

Max Process Temperature 260^OC for 20 sec.

Note: Frequency f at temperature T is related to frequency f₀

at turning point temperature T₀by:

f-f₀

f₀

k(T-T )

The oscillation frequency (f₀) is approximately equal to:

1. Tighter frequency calibration available.

2. Other turning points available.

TERMINATIONS

C₁

(2)

f₀f_S

[

]

2(C₀+ C_L)

Designation

SM1

SM2

SM3

SM4

Termination

Where

= Series resonant frequency of the crystal

= Motional Capacitance

= Shunt Capacitance

f_S

C₁

C₀

Gold Plated

Solder Plated

Solder Dipped

Solder Plated (Lead Free)

Solder Dipped (Lead Free)

CONVENTIONAL CMOS

PIERCE OSCILLATOR CIRCUIT

SM5

R_f

PACKAGING OPTIONS

CX2SM - Tray Pack

BUFFER

-16mm tape, 7” or 13” reels

(Reference tape and reel data sheet 10109)

OSC

Freq (f_O)

R_A

AMPLIFIER

CX2

HOW TO ORDER CX2SM CRYSTALS

CX2

SM1

1.0M

500

Frequency

K = kHz

M = MHz

Blank = Glass Lid

C = Ceramic Lid

Operating Temp. Range:

-10^OC to +70^OC

-40^OC to +85^OC

-55^OC to +125^OC

Customer Specified

C_G

C_D

SM1 = Gold Plated (Lead Free)

SM2 = Solder Plated

Calibration

Tolerance

@ 25^OC

“S” if special or

custom design.

Blank if Std.

SM3 = Solder Dipped

(in ppm)

SM4 = Solder Plated (Lead Free)

SM5 = Solder Dipped (Lead Free)

10135 - Rev C

STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com

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