ECX-26 Datasheet, PDF (1/1 Pages) ECS, Inc. – 32.768 KHz SMD TUNING FORK CRYSTAL

ECX-26/ECX-15 32.768 KHz SMD TUNING FORK CRYSTAL
The miniature ECX-26 and the sub-miniature
ECX-15 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
• Long term stability
• Tape & Reel packaging
PART NUMBERING GUIDE “EXAMPLE”
MANUFACTURER
FREQUENCY (32.768 MHz)
LOAD CAPACITANCE*
ECS
–
.327
–
12.5
* Package type examples (26=ECX-26, 27=ECX-15) Sample Part Number: ECS-.327-12.5-26
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
∆f/fo
Optional CL available
DL
R1
Q
β
CO
TOPR
TSTG
@ 100V DC ±15V
@ +25˚C ±3˚C
C1
MIN
+20
-20
-40
500M
ECX-26
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
PACKAGE TYPE
–
26
MIN
+20
-20
-40
500M
ECX-15
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
Ω
Q
˚C
PPM/˚C²
pF
˚C
˚C
Ω
PPM
PF
PACKAGE DIMENSIONS (mm)
8.95 ±0.05
#2
#3
<Top View>
#1
7.95 ±0.05
#2
#3
<Top View>
#1
#3
0.75
#2
#1
0.75
Figure 1) ECX-26 Top, Side Bottom & End views
#3
0.75
#2
#1
0.75
Figure 3) ECX-15 Top, Side Bottom & End views
0.85
7.4
0.85
Figure 2) ECX-26 Land Pattern
0.85
6.4
0.85
Figure 4) ECX-15 Land Pattern
PARABOLIC TEMPERATURE CURVE
T (˚C) -20 -10 0 10 20 30 40 50 60 70
-10
-20
-30
-40
-50
-60
f/f (PPM)
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
RECOMMENDED OSCILLATION
CIRCUIT
Rf
In this circuit, low
drive level with a
maximum of 1µW
is recommended.
Rd _{If excessive drive}
is applied, irregu-
lar oscillation or
C1
C2 _{quartz element}
fractures may
occur.
ELECTRICAL CHARACTERISTICS
IC: TC 4069P, Rf: 10MΩ
Rd: 330KΩ (As required)
C₁ = 22pF, C₂ = 22pF, V_DD = 3.0V
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX [phone] • WWW.ECSXTAL.COM
SMD CRYSTALS 15 SMD CRYSTALS