HEDS-9000/9100 Two Channel Optical Incremental Encoder Modules Data Sheet Description Features The HEDS-9000 and the HEDS-9100 series are high High performance performance, low cost, optical incremental encoder High resolution modules. When used with a code wheel, these mod- Low cost ules detect rotary position. The modules consist of a lensed (LED) source and a detector IC enclosed in a small Easy to mount C-shaped plastic package. Due to a highly col limated No signal adjustment required light source and unique photode tect or array, these mod- Small size ules are extremely tolerant to mounting misalignment. -40C to 100 C operating temperature The two channel digital outputs and the single 5 V sup- Two channel quadrature output ply input are accessed through fi ve 0.025 inch square pins located on 0.1 inch centers. TTL compatible Standard resolutions for the HEDS-9000 are 500 CPR Single 5 V supply and 1000 CPR for use with a HEDS-6100 codewheel or Applications equivalent. The HEDS-9000 and 9100 provide sophisticated mo- For the HEDS-9100, standard resolutions between 96 tion detection at a low cost, making them ideal for high CPR and 512 CPR are available for use with a HEDS-5120 volume applications. Typical applica tions include print- codewheel or equivalent. ers, plotters, tape drives, and factory automation equip- ment. Note: Avago Technologies encoders are not recommend- ed for use in safety critical applications. Eg. ABS braking systems, power steering, life support systems and critical care medical equipment. Please contact sales represen- tative if more clarifi cation is needed. ESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATIC DISCHARGE.YYXX YYXX X00 X00 Theory of Operation The HEDS-9000 and 9100 are C-shaped emitter/detec- The codewheel rotates between the emitter and detec- tor modules. Coupled with a codewheel, they translate tor, causing the light beam to be interrupted by the pat- the rotary motion of a shaft into a two-channel digital tern of spaces and bars on the code wheel. The photo- output. diodes which detect these interruptions are arranged in a pattern that corresponds to the radius and design of As seen in the block diagram, each module contains a the ode wheel. These detectors are also spaced such that single Light Emitting Diode (LED) as its light source. The a light period on one pair of detectors corre sponds to a light is collimated into a parallel beam by means of a dark period on the adjacent pair of detectors. The photo- single polycarbon ate lens located directly over the LED. diode outputs are then fed through the signal process- Opposite the emitter is the integrated detector circuit. ing circuitry resulting in A, A, B, and B. Two comparators This IC consists of multiple sets of photodetectors and receive these signals and produce the fi nal outputs for the signal processing circuitry necessary to product the channels A and B. Due to this integrated phasing tech- digital waveforms. nique, the digital output of channel A is in quadrature with that of channel B (90 degrees out of phase). Package Dimensions HEDS-9x00 26.67 (1.05) 8.6 (0.34) 15.2 (0.60) 0.63 (0.025) 2.54 (0.100) TYP. SQR. TYP. 1.8 1.52 (0.060) OPTION CODE (0.07) 1.0 (0.04) 2.9 5.1 (0.20) DATE CODE 2.21 6.9 (0.27) (0.11) 11.9 (0.087) 2.54 3.73 0.05 (0.47) 20.8 (0.100) (0.147 0.002) (0.82) 1.02 0.10 11.7 (0.040 0.004) 8.81 (0.46) 4.75 0.10 5.8 (0.347) 45 (0.187 0.004) (0.23) OPTICAL 2.67 (0.105) DIA. ALIGNING RECESS CENTER LINE MOUNTING THRU ALIGNING RECESS 2.44/2.41 DIA. C HOLE 2 PLACES 1.85 (0.073) L 1.78 0.10* 5.46 0.10 2.44/2.41 X 2.79 (0.096/0.095) ALIGNING RECESS (0.070 0.004) (0.215 0.004) (0.096/0.095 X 0.110) 2.44/2.41 DIA. 2.16 (0.085) 8.64 (0.340) 2.44/2.41 X 2.79 2.16 (0.085) DEEP (0.096/0.095) DEEP REF. (0.096/0.095 X 0.110) 2.92 0.10** 17.27 2.16 (0.085) DEEP 2.16 (0.085) DEEP (0.115 0.004) (0.680) OPTICAL 4.11 (0.162) 10.16 20.96 CENTER OPTICAL CENTER (0.400) (0.825) 6.35 (0.250) REF. TYPICAL DIMENSIONS IN MILLIMETERS AND (INCHES) SIDE A SIDE B * GAP MEASUREMENT TO THE SURFACE WINDOW = 1.68 0.10 (0.066 0.004) ** HEIGHT TO THE WINDOW = 3.02 0.10 (0.119 0.004) HEDS-9x01 26.67 (1.05) 8.6 (0.34) 15.2 (0.60) 0.63 (0.025) 2.54 (0.100) TYP. 4.01 0.20 SQR. TYP. (0.158 0.008) 1.8 OPTION CODE 1.0 (0.04) (0.07) 5.1 (0.20) 2.9 DATE CODE 2.21 (0.11) (0.087) 2.54 3.73 0.05 (0.100) (0.147 0.002) 16.76 0.20 (0.66 0.008) 1.02 0.10 11.7 (0.040 0.004) 8.81 (0.46) 4.75 0.10 5.8 (0.347) 45 (0.187 0.004) (0.23) 2.67 (0.105) DIA. OPTICAL ALIGNING RECESS MOUNTING THRU CENTER LINE 2.44/2.41 DIA. ALIGNING RECESS C HOLE 2 PLACES L (0.096/0.095) 1.85 (0.073) 1.78 0.10 * 5.46 0.10 2.44/2.41 X 2.79 ALIGNING RECESS (0.070 0.004) (0.215 0.004) (0.096/0.095 X 0.110) 2.44/2.41 DIA. 2.16 (0.085) 8.64 (0.340) 2.44/2.41 X 2.79 2.16 (0.085) DEEP (0.096/0.095) DEEP REF. (0.096/0.095 X 0.110) 2.92 0.10** 17.27 2.16 (0.085) DEEP 2.16 (0.085) DEEP (0.115 0.004) (0.680) OPTICAL 4.11 (0.162) 10.16 20.96 CENTER OPTICAL CENTER (0.400) 6.35 (0.250) REF. (0.825) TYPICAL DIMENSIONS IN MILLIMETERS AND (INCHES) * GAP MEASUREMENT TO THE SURFACE WINDOW = 1.68 0.10 (0.066 0.004) SIDE A SIDE B ** HEIGHT TO THE WINDOW = 3.02 0.10 (0.119 0.004) 2 V CC V CC 5 CH. B 5 CH. B 4 V CC 4 V CC 3 CH. A 3 CH. A 2 N.C. 2 N.C. 1 GND 1 GND GND GND HEDS-9X01 HEDS-9X00