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ECS-3X8X, 2X6X, 1X5X
32.768 KHz TUNING FORK
ECS tuning fork type crystals are used as a clock source in communication equipment, measuring instruments, microprocessors and other time management applications. Their low power consumption makes these crystals ideal for portable equipment.
FEATURES
* Cost effective * Tight tolerance * Long term stability * Excellent resistance and environmental characteristics * PbFree/RoHS Compliant
PART NUMBERING GUIDE "EXAMPLE"
MANUFACTURER ECS ECS ECS - - - FREQUENCY .327 .327 .327 - - - LOAD CAPACITANCE 12.5 12.5 8 - - - PACKAGE TYPE* 8X 13X 14X
* Package type examples (8X=3x8, 13X=2x6, 14X=1x5)
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS NOMINAL FREQUENCY FREQUENCY TOLERANCE LOAD CAPACITANCE (typ.) DRIVE LEVEL (max.) RESISTANCE AT SERIES RESONANCE Q-FACTOR TURNOVER TEMPERATURE
TEMPERATURE COEFFICIENT
Fo
f/fo
SHUNT CAPACITANCE CAPACITANCE RATIO OPERATING TEMP. RANGE STORAGE TEMP. RANGE SHOCK RESISTANCE INSULATION RESISTANCE AGING (FIRST YEAR) MOTIONAL CAPACITANCE
CL DL R1 Q TM Co TOPR TSTG IR
f/fo
ECS-3X8X 32.768 20 12.5 1 35 (max.) 90,000 (typ.) +25 5 2 -0.040ppm/C max. 1.60 (typ.) 460 (typ.)
C1
ECS-2X6X ECS-1X5X 32.768 32.768 20 20 12.5 8.0 1 1 35 (max.) 40 (max.) 70,000 (typ.) 80,000 (typ.) +25 5 +25 5 2 2 -0.040ppm/C max. -0.040ppm/C max. 1.35 (typ.) 1.00 (typ.) 450 (typ.) 400 (typ.) -10~+60 -40~+85 Drop test 3 times on hard wooden board from height of 75cm / 5 PPM max. 500M min./DC100V 3 PPM max. @ +25C 3C 0.0035 (typ.) 0.0030 (typ.) 0.0025 (typ.)
UNITS KHz PPM pF W K C PPM/(C) pF C C PPM M PPM pF
Note: Contact factory for optional load capacitance.
PACKAGE DIMENSIONS (mm)
1.1
O 3.1 Max.
RECOMMENDED OSCILLATION CIRCUIT
Rf
PARABOLIC TEMPERATURE CURVE
T (C)
-20 -10 0 10 20 30 40 50 -10 -20 60 70
o 0.35
8.2 Max.
10
Rd
-30 -40 -50
Figure 1) ECS-3X8X
0.7
C1 C2
-60
o 2.1 Max
o 0.26
f/f (PPM)
6.2 Max.
10
Figure 2) ECS-2X6X
0.45
o 1.5 Max
ELECTRICAL CHARACTERISTICS IC: TC 4069P Rf: 10M Rd: 330K (As required) C 1 = 22pF, C 2 = 22pF V DD = 3.0V
In this circuit, low drive level with a maximum of 1W 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 45C? 1) Change in T (C) 2) Change in frequency = 45 -25 = 20C = -0.04 PPM x ( T) 2 = -0.04 PPM x (20) 2 = -16.0 PPM
5.1 Max.
4.3
Figure 3) ECS-1X5X
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 * 913-782-7787 * 800-237-1041 * FAX 913-782-6991 * WWW.ECSXTAL.COM CRYSTALS 3 CRYSTALS
o 0.2

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