ECX-306I [ECS]
SMD TUNING FORK CRYSTAL; SMD音叉晶体
| 型号： | ECX-306I |
| 厂家： | 
ECS, INC. |
| 描述： | SMD TUNING FORK CRYSTAL |
| 文件： | 总1页 (文件大小：126K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ECX-306/306I SMD TUNING FORK CRYSTAL
Housing for the ECX-306/ 306I crystal is
made from the same thermoplastic that
is industry standard for integrated cir-
cuits. This ruggedized molded package
is excellent for SMD applications.
FEATURES
•
Low profile
•
•
Long term stability
Industry standard footprint
• Excellent shock resistance
• Excellent environmental characteristics
• Tape and Reel (3,000 pcs)
PART NUMBERING GUIDE “EXAMPLE”
FREQUENCY
LOAD CAPACITANCE
PACKAGE TYPE**
ECS
–
.327
–
12.5
–
17
** Package Type examples (-17= ECX-306, 17I= ECX-306I)
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
ECX-306/306
I
UNITS
KHz
pF
NOMINAL FREQUENCY
LOAD CAPACITANCE
Fo
CL
32.768
12.5 Standard (6.0 Optional)
1 max.
DRIVE LEVEL
DL
µW
CALIBRATION TOLERANCE
EQUIVALENT SERIES RESISTANCE
TEMPERATURE COEFFICIENT
OPERATING TEMPERATURE RANGE
MAX. OPERATING TEMPERATURE RANGE
Q FACTOR
TURNOVER TEMPERATURE
STORAGE TEMPERATURE RANGE
INSULATION RESISTANCE
SHUNT CAPACITANCE
@ 25˚C
R1
±20
50 max.
-0.040 PPM/˚C2 max.
-10 ~ +60
PPM
KΩ
PPM/(∆C˚)
˚C
TOPR
-40 ~ +85
50,000 min.
+25 ± 5
-55 ~ +125
min./ DC 100V
°C
Q
TO
TSTG
IR
°C
°C
MΩ
pF
500M
Ω
Co
1.35 typical
MOTIONAL CAPACITANCE
AGING (FIRST YEAR)
C1
∆f/fo
0.003 pF typical
±3 PPM max. @ +25˚C
pF
PPM
PARABOLIC TEMPERATURE CURVE
PACKAGE DIMENSIONS (mm)
T (˚C)
-20 -10
0
10 20 30 40 50 60 70
-10
-20
-30
-40
-50
-60
8.0 Max.
8.7 Max.
#4
#3
#3
#2
#4
#1
#4
#3
#2
#4
#1
#3
#2
#1
f/f (PPM)
#1
#2
To determine frequency stability, use parabolic
curvature. For example: What is the stability at 45˚C?
5.5
5.5
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
0.5
0.5
1.15
0.5
0.5
RECOMMENDED OSCILLATION
Figure 1) ECX-306 - Top, Side and End views
with pin connections
Figure 2) ECX-306
I - Top, Side and End views
CIRCUIT
Rf
with pin connections
In this circuit, low
drive level with a
maximum of 1µW
is recommended.
If excessive drive
is applied, irregu-
lar oscillation or
quartz element
fractures may
Rd
C2
C1
occur.
ELECTRICAL CHARACTERISTICS
IC: TC 4069P, Rf: 10MΩ
1.3
1.3
4.2
Rd: 330KΩ (As required)
C1 = 22pF, C2 = 22pF, VDD = 3.0V
Figure 3) ECX-306/306 I Land Pattern - Top view
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
SMD CRYSTALS 13 SMD CRYSTALS
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