HEDM-55xx/560x & HEDS-55xx/56xx Quick Assembly Two and Three Channel Optical Encoders Data Sheet Description Features The HEDS-5500/5540, HEDS-5600/5640, HEDM-5500/5540 Two channel quadrature output with optional index and HEDM-5600 are high performance, low cost, two pulse and three channel optical incremental encoders. These Quick and easy assembly encoders emphasize high reliability, high resolution, and easy assembly. No signal adjustment required External mounting ears available Each encoder contains a lensed LED source, an integrated circuit with detectors and output circuitry, and a codewheel Low cost which rotates between the emitter and detector IC. The Resolutions up to 1024 counts per revolution outputs of the HEDS-5500/5600 and HEDM-5500/ 5600 Small size 40C to 100C operating temperature are two square waves in quadrature. The HEDS-5540/5640 and HEDM-5540 also have a third channel index output in TTL compatible addition to the two channel quadrature. This index output Single 5 V supply is a 90 electrical degree, high true index pulse which is generated once for each full rotation of the codewheel. Applications The HEDS series utilizes metal codewheels, while the The HEDS-5500, 5540, 5600, 5640, and the HEDM-5500, HEDM series utilizes a film codewheel allowing for resolu - 5540,5600 provide motion detection at a low cost, making tions to 1024 CPR. them ideal for high volume applications. Typical applica- tions include printers, plotters, tape drives, positioning These encoders may be quickly and easily mounted to a tables, and automatic handlers. motor. For larger diameter motors, the HEDM-5600, and HEDS-5600/5640 feature external mounting ears. Note: Avago Technologies encoders are not recommend- ed for use in safety critical applications. Eg. ABS braking The quadrature signals and the index pulse are accessed systems, power steering, life support systems and critical through five 0.025 inch square pins located on 0.1 inch care medical equipment. Please contact sales representa- centers. tive if more clarification is needed. Standard resolutions between 96 and 1024 counts per revolution are presently available. Consult local Avago sales representatives for other resolutions. ESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATIC DISCHARGE. Package Dimensions HEDS-5500/5540, HEDM-5500/5540 *Notes: For the HEDS-5500 and HEDM-5500, Pin 2 is a No Connect. For the HEDS-5540 and HEDM-5540, Pin 2 is CH. I, the index output. HEDS-5600/5640, HEDM-5600, HEDM-5640 *Notes: For the HEDS-5600 and HEDM-5600, Pin 2 is a No Connect. For the HEDS-5640 and HEDM-5640, Pin 2 is CH. I, the index output. 2