AEAT-601B Incremental Magnetic Encoder Data Sheet Description Features Avago Technologies’ Incremental Magnetic Encoder provides an integrated solution for angular detection within a complete 360° rotation. The use of magnetic technology for motion control and sensing activities eliminates mechancial contact and enables this device to be free from mechanical wear and tear. Three-channel output provides an additional index channel for every full rotation or revolution of 360°. An additional advantage is that the encoders upper rotational speed limit is typically only limited by the application's bearing speed. x Resolution of 256 counts per revolution (CPR) Exploded View Applications x Contactless sensing technology x Wide temperature range from -40q to 125qC x 3-channel output x Single 5V supply x Easy assembly and no signal adjustment required x Direct connectivity through cable output x RoHS compliant x Speed detection x Knob control x Rotary encoders Table 1. Absolute Maximum Ratings [1, 2] Parameter Symbol Limits Units DC Supply Voltage at pin VDD = 5V VDD -0.3 to + 7 V Input Voltage Vi -0.3 to VDD+0.3 V Storage Temperature Tstg -40 to 125 qC Notes: 1. Stresses greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. 2. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Table 2. Recommended Operating Condition Parameters Symbols Values Units DC Supply Voltage at pin VDD = 5V VDD +4.5 / +5.5 V Operating Temperature Tamb 40/125 °C Rotational Speed : Mechanical (max) 12000 RPM Electrical (max) 7000 RPM Notes Notes: 1. Under recommended mounting and tolerance, and mechanical shaft play, the incremental encoder's quadrature output (quater cycle phase shift between Channel-A and Channel-B) is always maintained. The dynamic performance of the encoder output are depicted in the figures under Encoding Characteristic. 2. The magnetic incremental output has a fixed hysteresis of 0.7 degrees for all different CPR options (equivalent to 2 quadrature counts at 256 CPR or 0.5 quadrature count at 64 CPR). 3. The quadrature decoding of both the Channel-A and Channel-B would ensure that the incremental counts are maintained even when there is transition noise due to fluctuation of the magnetic field strength. Table 3. DC Characteristics DC Characteristics over Recommended Operating Range, typical at 25 qC Values Parameter Symbol Condition Min Typ. Max Units 16 20 mA VDD Supply Current IDD Output High Voltage VOH Output Low Voltage VOL VSS+0.4 V Output Current IO 4 mA 2 VDD-0.5 Notes V VDD pin = 4.5V AEAT-601B Performance Characteristics State Error Cycle Error 100 90 80 70 60 °e 50 40 30 20 10 0 100 90 80 70 60 °e 50 40 30 20 10 0 256CPR 64CPR 0 2000 4000 6000 8000 RPM 256CPR 64CPR 0 2000 4000 RPM Duty Error 80 °e 70 256CPR 60 64CPR 50 40 30 20 10 0 0 2000 4000 6000 8000 RPM Table 4. Encoding Characteristics Encoding Characteristics over Recommended Operating Range, typical at 25 qC over speed range. Parameter Symbol Typ. Units Index Pulse Width Po 150 qe 3 6000 8000 Package Dimensions Mounting Consideration # Parameter Unit Values 1 Maximum Shaft Axial Play mm * ± 0.08 2 Maximum Shaft TIR mm * 0.05 3 Maximum Mechanical Speed RPM 12,000 4 Shaft Diameter mm 6 +0 / -0.01 5 Moment Inertia g-cm2 0.104 6 Shaft Length mm 8.5 ± 1.0 7 Mounting Screw Size mm M2 x 0.4 x 8 (socket head cap screw, head Ǿ3.8 ± 0.18mm) 8 Recommended screw torque lb.inch 0.6 9 Encoder base plate thickness mm 2 10 Bolt Circle mm * ± 0.13 150 mm wire 23.0 mm 19.0 mm * Recommended to follow these limits for optimum performance Figure 1. Package and recommended mounting dimension Mounting Base Optional - Centering Jig (Refer to Application Note for details) Optional - Base Gap Setting Plate (Refer to Application Note for details) Figure 2. Accessories - HEDS-8934, A set of optional centering and gap setting jigs (available for purchase separately) 4 Output Waveform P B S1 S2 S3 C Key: S - State P - Pulse C - Cycle I - index S4 φ A 360°e Po I ΔI Note: Channel-B leads Channel-A at 90 qe at clockwise direction (top view of the encoder) and Channel-A leads Channel-B at 90 qe at anti-clockwise direction. Figure 3. Incremental output waveform Electrical Connections Pig Tail 6.0 23.0 26AWG 150 ±10 19.0 FRONT - 1 Index (Black) 5V (Yellow) B (Orange) GND (Red) A (Brown) TOP - 1 RIGHT - 1 Pin Symbol Color 1 5V Yellow 2 Gnd Red 3 Ch A Brown 4 Ch B Orange 5 Index Black Figure 4. Electrical Connections Ordering Information: AEAT-601B-F06 256CPR, 3 Channel Incremental, 6mm Hub Size HEDS-8934 Alignment tools set Note: Resolution options of 32,64 and 128CPR is also available. Contact factory for these options. For product information and a complete list of distributors, please go to our web site: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. Data subject to change. Copyright © 2005-2009 Avago Technologies. All rights reserved. AV02-2176EN - December 15, 2009