CX4V-C-SM4-32.768K100/C [EUROQUARTZ]
Quartz Crystal, QUARTZ CRYSTAL RESONATOR, 0.032768 MHz, LEAD FREE, LEADLESS, ULTRA MINIATURE, SMD, 2 PIN;型号: | CX4V-C-SM4-32.768K100/C |
厂家: | EUROQUARTZ LIMITED |
描述: | Quartz Crystal, QUARTZ CRYSTAL RESONATOR, 0.032768 MHz, LEAD FREE, LEADLESS, ULTRA MINIATURE, SMD, 2 PIN |
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
50
100
18
Motional Resistance R1 (kΩ):
Motional Capacitance C1 (fF):
QualityFactor Q (k):
2.3
40
1.07
85
2.2
140
5
1
9
8
Load Capacitance (pF) :
1
25
10
29
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
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.
2
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
2
=k(T-To)
fo
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
1.
2.
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
-
C
-
SM1 -
32.768K,
100 /
I
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
D
G
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
O
above the
to 250ppm
cy (f ) is 15
ion frequen
The oscillat
onant frequ
S
ency (f ).
l
Drive Leve
A
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
A
D
A
t changes in
ator agains
es the oscill
also stabiliz
and C . R
between R
O
A
d for
be increase
). R should
sistance (R
n.
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
L
L
C ). C is
he load ca
citances, sp
:
ely equal to
approximat
CD
CD
x CG
=
+
CS
CL
CG
+
D
G
Note: C and C include stray layout-induced capacitance to ground
S
and C is the stray shunt capacitance between the crystal terminal. In
L
practice, the effective value of C will be less than that calculated from
D
G
S
C , C and C values because of the effect of the amplifier output
S
resistance. C should be minimized.
O
The oscillation frequency (f ) is approximately equal to:
TERMINATIONS - PLATING
C1
fO
f
1+
=
S
Designation
Termination
2(CO
+
)
CL
SM1
SM2
SM3
SM4
SM5
Gold Plated (Lead Free)
Solder Plated
Solder Dipped
Solder Plated (Lead Free)
Solder Dipped (Lead Free)
Where
S
F = Series resonant frequency of the crystal
1
C = Motional Capacitance
O
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
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