12
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
SMD CRYSTALS
SMD CRYSTALS
2.7
2.7
5.0
FEATURES
• Low profile
• Long term stability
• Industry standard footprint
• Tape and Reel (2,000 pcs)
ECX-205/206
SMD TUNING FORK CRYSTAL
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PACKAGE DIMENSIONS (mm)
Figure 1) ECX-205/206 - Side and End views
Figure 2) ECX-205/206 Land Pattern- Top view
#3
#2
#4
#1
Figure 3) ECX-205 Pin Connection- Top view
Housing for the ECX-205/206 crystal is
made from the same thermoplastic that
is industry standard for integrated
circuits. This ruggedized molded
package is excellent for SMD
applications.
PARAMETERS
ECX-205/206
UNITS
NOMINAL FREQUENCY
Fo
32.768
KHz
LOAD CAPACITANCE
CL
12.5 Standard (6.0 Optional)
pF
DRIVE LEVEL
DL
1.0 max.
µW
CALIBRATION TOLERANCE
@ +25˚C
±20
PPM
EQUIVALENT SERIES RESISTANCE
R1
50 max.
K
Ω
TEMPERATURE COEFFICIENT
-0.040 PPM/˚C2 max.
PPM/(
∆C˚)
OPERATING TEMPERATURE RANGE
TOPR
-10 ~ +60
˚C
MAX. OPERATING TEMPERATURE RANGE
-40 ~ +85
°C
Q FACTOR
Q
50,000 min.
TURNOVER TEMPERATURE
TO
+25 ± 5
°C
STORAGE TEMPERATURE RANGE
TSTG
-55 ~ +125
°C
INSULATION RESISTANCE
IR
500M
Ω min./ DC 100V
M
Ω
SHUNT CAPACITANCE
Co
2.0 typical
pF
MOTIONAL CAPACITANCE
C1
0.003 pF typical
pF
AGING (FIRST YEAR)
∆f/fo
±3 PPM max. @ +25˚C
PPM
PART NUMBERING GUIDE “EXAMPLE”
FREQUENCY
LOAD CAPACITANCE
PACKAGE TYPE*
ECS
–
.327
–
12.5
–
11
ECS
–
.327
–
12.5
–
6
2.54
10.41
0.51
2.29
4.2
#3
#2
#4
#1
Figure 4) ECX-206 Pin Connection - Top view
* Package Type examples (11= ECX-205, 6= ECX-206)
Rf
Rd
C2
C1
ELECTRICAL CHARACTERISTICS
IC: TC 4069P, Rf: 10M
Ω
Rd: 330K
Ω (As required)
C1 = 22pF, C2 = 22pF
VDD = 3.0V
RECOMMENDED OSCILLATION
CIRCUIT
PARABOLIC TEMPERATURE CURVE
In this circuit, low drive level with a maximum of
1µW is recommended. If excessive drive is
applied, irregular oscillation or quartz element
fractures may occur.
-20
-10
-20
-30
-40
-50
-60
-10
0
10
20
30
40 50
60
70
f/f (PPM)
T (˚C)
To determine frequency stability, use parabolic
curvature. For example: What is the stability at 45˚C?
1) Change in T (˚C) = 45 -25 = 20˚C
2) Change in frequency = -0.04 PPM x (
∆T)
2
= -0.04 PPM x (20)
2
= -16.0 PPM
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
