AEDR-8600 2 Channel Refl ective Incremental Encoders Data Sheet Description Features The AEDR-8600 is the smallest 2 channels optical encoder World smallest 2 channels refl ective technology with digital outputs in the market employing refl ective encoder technology for motion control purposes. The encoder Surface mount leadless package 3.95 mm (L) x 3.4 mm is designed to operate over -20 C to 85 C temperature (W) x 0.9562 mm (H) range and hence suitable for both commercial and even 2 Channels two channel quadrature digital outputs for industrial end applications. direction sensing The encoder houses an LED light source and a photo- Build in interpolator, factor of 1x, 2x and 4x selectable detecting circuitry in a single package. The small size of via external pinouts 3.95 mm (L) x 3.4 mm (W) x 0.9562 mm (H), allows it to be TTL compatible even used in a wide range of miniature commercial appli- cation where size and space is a primary concern. Single 5 V supply The AEDR -8600 encoder off ers two-channel quadrature -20 C to 85 C absolute operating temperature digital outputs. Being TTL compatible, the outputs of the Encoding resolution: 294 to 304 (lines/inch) AEDR-8600 encoder can be interfaced directly with most of the signal processing circuitries. Hence the encoder Applications provides great design-in fl exibility and easy integration Ideal for high volume applications: into existing systems. Close Loop stepper Motors R Miniature Motors V CC Printers Copiers Card readers Gnd Scanners V CC Projectors Ch A Consumer and Industrial Product Applications Signal Ch B Processing NC Circuitry SEL 4X SEL 2X Gnd Codewheel Note: Drawing not to scale. Note: Avago Technologies encoders are not recommended for use in safety critical applications, e.g., ABS braking systems, power steering, life support systems and critical care medical equipment. Avagos products and software are not specifi cally designed, manufactured or authorized for sale as parts, components or assemblies for the planning, con- struction, maintenance or direct operation of a nuclear facility or for use in medical devices or applications. Customers are solely responsible, and waive all rights to make claims against Avago or its suppliers, for all losses, damage, expense or liability in connection with such use. Please contact your local sales representative if more clarifi cation is needed. Reflective EncoderOutput waveform Top View C P 360 e Deg A B S1 S2 S3 S4 Anti-clockwise Codewheel rotation movement (Anti-clockwise) Encoder Ch. A leads Ch. B QUADRATURE SIGNALS A, B Codewheel Note: Drawing not to scale. Absolute Maximum Ratings Storage Temperature, T -20 C to 85 C S Operating Temperature, T -20 C to 85 C A Supply Voltage, V 7 V CC Output Voltage, V V O CC Notes: 1. Exposure to extreme light intensity (such as from fl ashbulbs or spotlights) may cause permanent damage to the device. 2. CAUTION: It is advised that normal static precautions should be taken when handling the encoder in order to avoid damage and/or degradation induced by ESD. 3. Proper operation of the encoder cannot be guaranteed if the maximum ratings are exceeded. Recommended Operating Conditions ( based on limited prototype samples testing 11.38 Rop codewheel) Parameter Sym. Min. Typ. Max. Units Notes Temperature T -20 25 85 C A Supply Voltage V 4.5 5 5.5 V Ripple < 100mVp-p CC LED Current I 15mA mA See note 1 LED 2 Count Frequency F 55 kHz 1 x Interpolation Factor Radial Misalignment E 0.2 mm R Tangential Misalignment E 0.2 mm T Codewheel Gap G 0.5 1.0 1.25 mm See note 3 Notes: 1. LED Current Limiting Resistor: Recommended series resistor = 180 (1%) 2. Count frequency = velocity (rpm) x CPR / 60. 3. Avago recommends 1.0mm gap as nominal. 2 Amplitude