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Document overview

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Technical content

Features

/g120 Resolution of 256 counts per revolution (CPR) /g120 Contactless sensing technology /g120 Wide temperature range from -40 /g113 to 125/g113C /g120 3-channel output /g120 Single 5V supply /g120 Easy assembly and no signal adjustment required /g120 Direct connectivity through cable output /g120 RoHS compliant

Applications

/g120 Speed detection /g120 Knob control /g120 Rotary encoders

Table 1. Absolute Maximum Ratings [1, 2]

  1. Stresses greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is stress rating only and
  2. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

Table 2. Recommended Operating Condition

  1. Under recommended mounting and tolerance, and mechanical shaft pla y, the incremental encoder's quadrature output (quater cycle phase shift
  2. The magnetic incremental output has a fixed hysteresis of 0.7 deg rees for all different CPR options (equivalent to 2 quadrature counts at 256 CPR

or 0.5 quadrature count at 64 CPR).

  1. The quadrature decoding of both the Channel-A and Channel-B would ensure that the incremental counts are maintained even whe n there is

transition noise due to fluctuation of the magnetic field strength. Table 3. DC Characteristics

Table 4. Encoding Characteristics Encoding Characteristics over Recommended Operating Range, typical at 25 /g113C over speed range.

1 Maximum Shaft

3 Maximum

7 Mounting Screw

8 Recommended

9 Encoder base

Figure 1. Package and recommended mounting dimension Figure 2. Accessories - HEDS-8934, A set of optional centering and gap setting jigs (available for purchase separately)

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. Figure 3. Incremental output waveform Figure 4. Electrical Connections Note: Resolution options of 32,64 and 128CPR is also available. Contact factory for these options.

2 Gnd Red

3 Ch A Brown

4 Ch B Orange

5 Index Black