For more information, please visit the product page. rev. DESCRIPTION: rotary encoder PART NUMBER: EC208AB ELECTRICAL SPECIFICATIONS output waveform output signals current consumption output voltage Square wave A, B phase 20 mA max. Vcc ~ 0.5 V min. 0.7 V max. -0.1 mA max. 3.3 V dc ± 5% 25 100 Hz “H” “L” output current supply voltage output resolution (ppr) frequency response MECHANICAL SPECIFICATIONS max shaft load, radial: axial: starting torque rotational angle maximum speed rotational life weight 1 kgf 1 kgf 0.4 ±0.2 N·cm max. (41 ±20 gf·cm max.) 360° continuous 240 RPM 1,000,000 cycles 20 g ENVIRONMENTAL SPECIFICATIONS operating temp storage temp humidity vibration shock 0° to +60° C -20° to +80° C 85% RH, no condensation 10 ~ 55 Hz. 1.5 mm, 2 hours 50 G, 6 ms, 3 axes, 3 reps ORDERING INSTRUCTIONS EC208X025X Detent: A = Without detent B = With detent Termination options: A = Solder holes B = Connector C = Cable D = PC board mount 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 page 1 of 2 date 08/2008 For more information, please visit the product page. rev. page 2 of 2 date 08/2008 DESCRIPTION: rotary encoder PART NUMBER: EC208AB OUTPUT CIRCUIT OUTPUT WAVEFORM (Clockwise rotation viewed from front) INTERNAL CIRCUIT EXTERNAL CIRCUIT +3.3V (Pin 1) Detent Position R1 A R2 EC208X R3 +3.3V PI1 Ch B (Pin 2) 1 PI2 Ch A (Pin 3) 2 74HC14 Output B 74HC14 3 0V (Pin 4) B 4 NC (Pin 5) NC (Pin6) MECHANICAL DRAWING EC208X025A 20 10 Ø2 9.6 1 12.5 20 Ø6 8.5 10 M9 P=0.75 2 1.5 6-Ø1.0 6 Pin No. 1 7.1 20 10 EC208X025B 1 EC208X025D 9.6 1 PCB Footprint 20.4 6 2-Ø2.2 10 EC208X025C 1.8 3.5 2 11.2 JST: B6B-PH-K-S 4.5 6-Ø1 AWG28 UL1007 JST: 6P-SAN 150 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 Output A