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ECX-26X Datasheet, PDF (1/1 Pages) ECS, Inc. – 32.768 KHz SMD TUNING FORK CRYSTAL | |||
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ECX-26X/ECX-15X 32.768 KHz SMD TUNING FORK CRYSTAL
The miniature ECX-26X and the sub-miniature
ECX-15X are compact, cost effective SMD
tuning fork crystals. The slimline molded
package requires less space than other SMD
tuning fork crystals.
FEATURES
⢠Cost effective
⢠Low profile
⢠RoHS Compliant w/exemption for Pb in high temp solder
⢠Tape & Reel packaging
PART NUMBERING GUIDE âEXAMPLEâ
MANUFACTURER
FREQUENCY (32.768 MHz)
LOAD CAPACITANCE*
ECS
â
.327
â
12.5
* Package type examples (26X=ECX-26X, 27X=ECX-15X) Sample Part Number: ECS-.327-12.5-26X
PACKAGE TYPE
â
26X
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
FREQUENCY RANGE
FREQUENCY TOLERANCE
LOAD CAPACITANCE
DRIVE LEVEL
EQUIV. SERIES RESISTANCE
Q-FACTOR
TURNOVER TEMPERATURE
TEMPERATURE COEFFICIENT
SHUNT CAPACITANCE
CAPACITANCE RATIO
OPERATING TEMP RANGE
STORAGE TEMP RANGE
INSULATION RESISTANCE
AGING (FIRST YEAR)
MOTION CAPACITANCE
CONDITIONS
FO
âf/fo
Optional CL available
DL
R1
Q
β
CO
TOPR
TSTG
@ 100V DC ±15V
@ +25ËC ±3ËC
C1
MIN
+20
-20
-40
500M
ECX-26X
TYP
32.768
12.5
70K
+25
-0.35
0.9
360
0.0025
MAX
±20
1.0
50K
+30
-0.04
+70
+125
±3
MIN
+20
-20
-40
500M
ECX-15X
TYP
32.768
12.5
70K
+25
-0.35
0.95
380
+0.0025
MAX
±20
1.0
55K
+30
-0.04
+70
+125
±3
UNITS
KHz
PPM
pF
µW
â¦
Q
ËC
PM/ËC
pF
ËC
ËC
â¦
PPM
PF
PACKAGE DIMENSIONS (mm)
8.95 ±0.05
#2
#3
<Top View>
#1
#2
#3
0.75
#1
0.75
Figure 1) ECX-26X Top, Side Bottom & End views
0.85
7.4
0.85
Figure 2) ECX-26X Land Pattern
7.95 ±0.05
#2
#3
<Top View>
#1
#3
0.75
#2
#1
0.75
RECOMMENDED OSCILLATION
CIRCUIT
Rf
Rd
C1
C2
PARABOLIC TEMPERATURE CURVE
T (ËC) -20 -10 0 10 20 30 40 50 60 70
-10
-20
-30
-40
-50
-60
f/f (PPM)
Figure 3) ECX-15X Top, Side Bottom & End views ELECTRICAL CHARACTERISTICS
IC: TC 4069P
Rf: 10Mâ¦
Rd: 330K⦠(As required)
C1 = 22pF, C2 = 22pF
VDD = 3.0V
0.85
6.4
0.85
Figure 4) ECX-15X Land Pattern
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.
To determine frequency stability, use parabolic
curvature. For example: What is the stability at 45ËC?
1) Change in T (ËC) = 45 -25 = 20ËC
2) Change in frequency = -0.04 PPM x (âT)2
= -0.04 PPM x (20)2
= -16.0 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 14 SMD CRYSTALS
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