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Reflective Optical Encoders for Low -Power Miniaturized Motion Control Systems
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A new series of 3-channel reflective optical encoder devices is targeted for use in low-power miniaturized motion control systems such as stepper motors, electrical actuators, piezoelectric drives and portable medical appliances. Expanding upon previous generation devices, the new AEDR-87xx from Avago Technologies boasts encoding resolution up to 318 lines per inch (LPI) supports 3.3V and 5V supply voltage for low-power applications. Dual analog outputs interface directly with an external interpolator for high precision motion control measurements. The devices are packaged in industry’s smallest form factor for 3-channel reflective optical encoder.
Key features include 3 channel outputs including one index digital output and a built-in Interpolator for 4x, 8x and 16x Interpolation. The line has built-in Automatic LED Current regulation and an encoding resolution of 318 LPI (up to 1.25um pitch). Power supply voltage is 3.3 or 5 V for theAEDR-871x and 5 V for theAEDR-872x. In addition, their compact size is only 3.95 mm (L) x 3.4 mm (W) x 0.956 mm (H). The AEDR-8710 and AEDR-8723 are priced starting at $15 and $22 USD, respectively in 10,000 piece quantities.
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