ECX-306X [ECS]
SMD TUNING FORK CRYSTAL; SMD音叉晶体
| 型号： | ECX-306X |
| 厂家： | 
ECS, INC. |
| 描述： | SMD TUNING FORK CRYSTAL |
| 文件： | 总1页 (文件大小：318K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ECX-306X/306IX SMD TUNING FORK CRYSTAL
Housing for the ECX-306X/306IX crystal
is made from the same thermoplastic
that is industry standard for integrated
circuits. This ruggedized molded pack-
age 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)
• RoHS Compliant w/ Exemption for High Temp Solder
PART NUMBERING GUIDE “EXAMPLE”
MANUFACTURER
FREQUENCY
LOAD CAPACITANCE
PACKAGE TYPE**
ECS
–
.327
–
12.5
–
17X
** Package Type examples (-17X= ECX-306,X 17IX= ECX-306IX)
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
ECX-306/306
I
UNITS
KHz
pF
µW
NOMINAL FREQUENCY
Fo
CL
32.768
LOAD CAPACITANCE
DRIVE LEVEL
12.5 Standard (6.0 Optional)
1 max.
DL
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
PPM
KΩ
PPM/(ΔC˚)
˚C
50 max.
-0.040 PPM/˚C2 max.
-10 ~ +60
TOPR
-40 ~ +85
50,000 min.
+25
-55 ~ +125
min./ DC 100V
°C
Q
TO
TSTG
IR
5
°C
°C
MΩ
pF
500M
Ω
Co
1.35 typical
MOTIONAL CAPACITANCE
AGING (FIRST YEAR)
C1
Δf/fo
0.003 pF typical
3 PPM max. @ +25˚C
pF
PPM
PACKAGE DIMENSIONS (mm)
RECOMMENDED OSCILLATION CIRCUIT
Rf
8.0 Max.
8.7 Max.
#4
#3
#3
#2
#4
#1
#4
#3
#2
#4
#1
#3
#2
Rd
#1
#1
#2
C1
C2
5.5
5.5
ELECTRICAL CHARACTERISTICS
IC: TC 4069P
0.5
0.5
1.15
0.5
0.5
Rf: 10MΩ
Figure 1) ECX-306 - Top, Side and End views
with pin connections
Figure 2) ECX-306I - Top, Side and End views
Rd: 330KΩ (As required)
C1 = 22pF, C2 = 22pF
VDD = 3.0V
with pin connections
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.
PARABOLIC TEMPERATURE CURVE
T (˚C)
-20 -10
0
10 20 30 40 50 60 70
-10
-20
-30
-40
-50
-60
To determine frequency stability, use parabolic
curvature. For example:
What is the stability at 45˚C?
1.3
1.3
4.2
1) Change in T (˚C) = 45 -25 = 20˚C
2) Change in frequency = -0.04 PPM x (ΔT)
2
2
= -0.04 PPM x (20)
= -16.0 PPM
Figure 3) ECX-306/306I Land Pattern - Top view
f/f (PPM)
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
12
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