Product Overview
The HEDS-55xx/56xx and HEDM-55xx/56xx series are high-performance, low-cost, two and three-channel optical incremental encoders designed for easy assembly and high reliability. These encoders offer high resolution and feature a lensed LED source, an integrated circuit with detectors and output circuitry, and a codewheel. They provide two square waves in quadrature, with an optional third channel index output for three-channel models. The HEDS series uses metal codewheels, while the HEDM series utilizes film codewheels for resolutions up to 1024 CPR. They are suitable for various motor mounting applications, including those with larger diameter motors featuring external mounting ears. The outputs are accessed via five 0.025-inch square pins on 0.1-inch centers.
Product Attributes
- Brand: Avago Technologies (implied by sales representative mention)
- ESD Warning: Normal handling precautions should be taken to avoid static discharge.
- Safety Note: Not recommended for use in safety-critical applications (e.g., ABS braking systems, power steering, life support systems, critical care medical equipment).
Technical Specifications
| Part Number | Description | Operating Temperature (TA) | Storage Temperature (TS) | Supply Voltage (VCC) | Output Current (IOUT) | Velocity | Resolution |
| HEDS-55XX/56XX | Two and Three Channel Optical Encoders | -40C to 100C | -40C to 100C | -0.5 V to 7 V | -1.0 mA to 5 mA | 30,000 RPM | Up to 1024 CPR |
| HEDM-550X/560X | Two Channel Optical Encoders | -40C to +70C | -40C to +70C | -0.5 V to 7 V | -1.0 mA to 5 mA | 30,000 RPM | Up to 1024 CPR |
| HEDM-5540/5640 | Three Channel Optical Encoders | -40C to 85C | -40C to 85C | -0.5 V to 7 V | -1.0 mA to 5 mA | 30,000 RPM | Up to 1024 CPR |
| Part No. | Parameter | Sym. | Min | Typ.* | Max. | Units | Notes |
| HEDS-5500/5600 | Pulse Width Error | P | 7 | e | |||
| HEDS-5500/5600 | Logic State Width Error | S | 5 | e | |||
| HEDS-5500/5600 | Phase Error | 2 | e | ||||
| HEDS-5500/5600 | Position Error | 10 | min. of arc | ||||
| HEDS-5500/5600 | Cycle Error | C | 3 | 40 | e | ||
| HEDM-5500/5600 | Pulse Width Error | P | 10 | e | |||
| HEDM-5500/5600 | Logic State Width Error | S | 10 | e | |||
| HEDM-5500/5600 | Phase Error | 2 | e | ||||
| HEDM-5500/5600 | Position Error | 10 | min. of arc | ||||
| HEDM-5500/5600 | Cycle Error | C | 3 | 40 | e | ||
| HEDS-5540/5640 | Pulse Width Error | P | 5 | e | |||
| HEDS-5540/5640 | Logic State Width Error | S | 5 | e | |||
| HEDS-5540/5640 | Phase Error | 2 | e | ||||
| HEDS-5540/5640 | Position Error | 10 | min. of arc | ||||
| HEDS-5540/5640 | Cycle Error | C | 3 | 40 | e | ||
| HEDS-5540/5640 | Index Pulse Width | Po | 90 | e | CH.I rise after CH.A or CH. B fall: -300 to 250 ns (t1) | ||
| HEDS-5540/5640 | Index Pulse Width | Po | 125 | e | CH.I fall after CH.A or CH. B rise: 70 to 1000 ns (t2) | ||
| HEDM-5540/5640 | Pulse Width Error | P | 10 | e | |||
| HEDM-5540/5640 | Logic State Width Error | S | 10 | e | |||
| HEDM-5540/5640 | Phase Error | 2 | e | ||||
| HEDM-5540/5640 | Position Error | 10 | min. of arc | ||||
| HEDM-5540/5640 | Cycle Error | C | 6 | 40 | e | ||
| HEDM-5540/5640 | Index Pulse Width | Po | 90 | e | CH.I rise after CH.A or CH. B fall: 200 to 1500 ns (t1) | ||
| HEDM-5540/5640 | Index Pulse Width | Po | 130 | e | CH.I fall after CH.A or CH. B rise: 0 to 1500 ns (t2) |
Note: *Typical values specified at VCC = 5.0 V and 25C.
2509191054_Broadcom-HEDS-5500-A06_C22406239.pdf
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