CX-1S-03 datasheet(2/2 Pages) RSG

tên linh kiện	CX-1S-03

Giải thích chi tiết về linh kiện	530 kHz to 2.1 MHz Miniature Quartz Crystal

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nhà sản xuất	RSG [RSG Electronic Components GmbH]

Trang chủ	http://www.rsg-electronic.de

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10130 - Rev B

SPECIFICATIONS

Specifications are typical at 25oC unless otherwise noted.

Specifications are subject to change without notice.

Frequency Range

530 kHz - 2.1 MHz

Functional Mode

Extensional

Calibration Tolerance*

A

0.05% ( 500ppm)

B

0.1%

C

1.0%

Load Capacitance

7 pF

Motional Resistance (R1)3 k MAX

Motional Capacitance (C1) 1.2fF

Quality Factor (Q)

150 k

Shunt Capacitance (C0)

1.0 pF

Drive Level

3

W MAX.

Turning Point (TO)**

35

oC

Temperature Coefficient (k) -0.035 ppm/

oC2

Note: Frequency (f) deviation from frequency (fO) @ turning

point temperature (TO);

Aging, first year

5ppm MAX.

Shock

750g peak, 0.3 msec., 1/2 sine

Vibration, survival

10g rms, 20-1,000 Hz random

Operating Temperature

-10

oC to +70oC

Commercial

-40

oC to +85oC

Industrial

-55

oC to +125oC Military

Storage Temperature

-55

oC to +125oC

Max Process Temperature

See package handling

* Tighter frequency calibration available.

** Other turning point available.

+

_

+

_

+

_

+

_

HOW TO ORDER CX-1-03 LEADED CRYSTALS

CX-1

-03

1.0 MHz

( A

/ I )

“S” if special

Blank=Glass Lid

Side

Calibration

Temp. Range:

or custom

C=Ceramic Lid

Leads

Tolerance*

C = Commercial

design. Blank

@ 25

0C

I

= Industrial

if Std.

(A)

M = Military

(B)

S = Specify

(C)

*Other calibration fill in ppm.

PACKAGING

CX-1V-03 -Tray Pack (Standard)

TYPICAL APPLICATION

FOR A PIERCE OSCILLATOR

The low profile CX miniature leaded 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 CD and CG provides the additional phase shift

necessary to sustain oscillation. The oscillation frequency

(fO) is 15 to 150 ppm above the crystal’s series 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 amplifiers output

resistance (R0). 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 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 =

CD x CG

+

CS

CD + CG

f-fO

=

k(T-TO)

2

(1)

fO = fS

[1+

C1

]

2(C0 + CL)

(2)

Where f

S

= Series resonant frequency of the crystal

C1 = Motional Capacitance

C0 = Shunt Capacitance

fO

Frequency

AMPLIFIER

BUFFER

C

G

C

D

R

A

CX-1

Contact factory for

design guidelines

OSC

Freq (f )

O

R

f

C

S

CONVENTIONAL CMOS

PIERCE OSCILLATOR CIRCUIT

RSG Electronic Components GmbH, Sprendlinger Landstr. 115, 63069 Offenbach, Germany, Tel. +49 69 - 984047-0, Fax: +49 69 - 9840-77, www.rsg-electronic.de

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