ECS-.327-12.5-26

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” M ANUFACTURER ECS – FREQUENCY (32.768 MHz) .327 – LOAD CAPACITANCE* 12.5 – PACKAGE TYPE 26 * 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 +20 β CO T OPR T STG @ 100V DC ±15V @ +25˚C ±3˚C C1 -20 -40 500M 0.0025 MIN ECX-26 TYP 32.768 12.5 1.0 50K 70K +25 -0.35 0.9 360 +30 -0.04 +20 70K +25 -0.35 0.95 380 MAX ±20 12.5 1.0 55K +30 -0.04 MIN ECX-15 TYP 32.768 MAX ±20 UNITS KHz PPM pF µW Ω Q ˚C PPM/˚C 2 pF ˚C ˚C Ω PPM PF +70 +125 ±3 -20 -40 500M +0.0025 +70 +125 ±3 PACKAGE DIMENSIONS (mm) 8.95 ±0.05 2.25 ±0.05 #2 #3 PARABOLIC TEMPERATURE CURVE T (˚C) -20 -10 0 10 20 30 40 50 -10 60 70 7.95 ±0.05 2.05 ±0.05 #2 #3 -20 -30 -40 -50 #1 #1 -60 2.05 ±0.05 1.55 ±0.05 f/f (PPM) #2 #3 #1 0.85 #2 #3 #1 0.85 0.75 0.75 0.75 0.6 0.75 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 2) Change in frequency = -0.04 PPM x (∆T) 2 = -0.04 PPM x (20) = -16.0 PPM 0.9 0.75 0.75 RECOMMENDED OSCILLATION CIRCUIT Rf Figure 1) ECX-26 Top, Side Bottom & End views Figure 3) ECX-15 Top, Side Bottom & End views Rd 0.85 0.5 0.85 C1 C2 0.95 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. 0.95 0.7 2.7 0.8 2.2 0.7 0.85 7.4 0.85 0.85 0.6 6.4 0.6 0.85 Figure 2) ECX-26 Land Pattern Figure 4) ECX-15 Land Pattern ELECTRICAL CHARACTERISTICS IC: TC 4069P, Rf: 10M Ω Rd: 330K Ω (As required) C 1 = 2 2pF, C 2 = 2 2pF, V DD = 3 .0V ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM SMD CRYSTALS 15 SMD CRYSTALS