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AEAT-6010/6012 Magnetic Encoder
10 or 12 bit Angular Detection Device
Data Sheet
Description
Avago Technologies' AEAT-60xx series of magnetic encoders provides an integrated solution for angular detection. With ease of use in mind, these magnetic encoders are ideal for angular detection within 360. Based on magnetic technologies, the device is noncontact and ensures reliable operations. It is able to provide absolute angle detection upon power-up, with a resolution of 0.0879(12 bits version) or 0.35(10bits version), which is equivalent to 4096 and 1024 positions per revolution respectively. The positional data is provided in serial bit stream. There is no upper speed limit; the only restriction is that there will be fewer samples per revolution as the speed increases.
Features
* 10 or 12 bits resolution * Contactless sensing technologies * Wide temperature range from -40 to 125C * Absolute angular position detection * Synchronous serial interface (SSI) output for absolute position data (binary format) * Code monotony error = 1 LSB * Single 5V supply * Easy Assembly, No Signal Adjustment required * Direct Connectivity through PCB * RoHS compliant
Exploded View
Applications
* Flow meter
Plastic Housing Sensor PCB Assembly Magnet Snap Ring Motor Plastic Hub Plastic Base Plate Customer Shaft 2 x screws
Magnetic Encoder
* Angular detection * Knob control * Rotary encoder
Note: "This product is not specifically designed or manufactured for use in any specific device. Customers are solely responsible for determining the suitability of this product for its intended application and solely liable for all loss, damage, expense or liability in connection with such use."
Device Selection Guide [1]
Part Number AEAT-6012 AEAT-6010 Resolution (bit) 12 10 Operating Temperature (C) -40 to +125 -40 to +125 Output Communication Serial Serial DC Supply Voltage (V), VDD +5.0 +5.0
Notes: 1. For other options of Magnetic Encoder, please refer to factory.
Table 1. Absolute Maximum Ratings [1, 2]
Parameter DC Supply Voltage at pin VDD = 5V Input Voltage Storage Temperature Symbol VDD Vi TSTG Limits -0.3 to + 7 -0.3 to VDD+0.3 -40 to 125 Units V V C Notes
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
Parameter DC Supply Voltage at pin VDD = 5V Ambient Temperature Maximum Read-out Frequency Symbol VDD Tamb fCLK Values +4.5 / +5.5 -40 to +125 1 Units V C MHz >0 MHz Notes
Table 3. DC Characteristics
DC Characteristics over Recommended Operating Range, typical at 25 C Values Parameter VDD Supply Current Output High Voltage D0 Output Low Voltage D0 Output Current D0 Input High Voltage CLK, CSn Input Low Voltage CLK, CSn
Notes: 1. CSn is internal pull-up.
Symbol IDD VOH VOL IO VIH VIL
Condition
Min VDD-0.5
Typ. 16
Max 20 VSS+0.4 4
Units mA V V mA
Notes
VDD pin = 4.5V 1
0.7*VDD 0.3*VDD
2
Table 4. Timing Characteristics
Timing Characteristics over Recommended Operating Range, typical at 25 C Values Parameter Data output activated (logic high) First data shifted to output register Start of data output Data output valid Data output tristate Pulse width of CSn Sampling rate for absolute output Symbol TDO active tCLK FE TCLK/2 TDO valid TDO tristate TCSn fabs 500 9.9 10.42 10.94 500 500 375 100 Condition Min Typ. Max 100 Units ns ns ns ns ns ns kHz Notes 2 3 4 5 6 7 8
Notes: 2. Time between falling edge of CSn and data output activated 3. Time between falling edge of CSn and first falling edge of CLK 4. Rising edge of CLK shifts out one bit a time 5. Time between rising edge of CLK and data output valid 6. After the last bit DO changes back to "tristate" 7. CSn=high; To initiate read-out of next angular position 8. Internal sampling rate.
Package Dimensions
Parameters
No. 1 2 3 4 5 6 7 8 23mm Parameter Operating Temp(C) Shaft axial play (mm) Shaft TIR (mm) Mechanical speed (rpm) Shaft diameter (mm) Moment inertia (g-cm^2) Shaft length - (mm) Mounting screw size (mm) Value - 40 to +125 0.08 0.05 12,000 6 + 0 / -0.01 0.104 8.5 1.0 M2 x 0.4 x 4 (socket head cap screw, head O3.8 0.18 mm) 0.6 lb.inch 2 0.13
19mm
9 10 11
Recommended screw torque Encoder base plate thickness (mm) Bolt circle
O 23mm Base Plate Screw Mounting
*
Note:- For high temperature application, it is highly recommended that adhesive be applied at least to the screw and the base plate interface. Refer Application Note for further details.
17
Figure 1. Package and recommended mounting dimension
3
Timing Characteristics
CS
t CS t CLKFE TCLK/2
1 10
t CLKFE
1
CLK
DO
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
D9
t DO active
t DO valid
Positional Data Bits
t DO Tristate
Notes: 1. Please refer to Table 4 for Timing Characteristics. 2. For 12 bits version; the Positional Data Bits will start with D11 instead and end at D0.
Figure 2. Timing Diagram for 10 bit Magnetic Encoder
Electrical Connections
VDD Vss DO Pin 1 2 3 CSn CLK 4 5 22.6 Symbol VDD CSn VSS CLK DO Description 5V Supply Voltage Chip Select - Input (See Figure 2) Supply Ground Serial Clock - Input (See Figure 2) Serial Data - Output. (See Figure 2)
Figure 3. Electrical Connections
3.6 8.4 1.25
Figure 4. Basic connector dimensions
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, Limited in the United States and other countries. Data subject to change. Copyright (c) 2007 Avago Technologies Limited. All rights reserved. AV02-0188EN - March 20, 2007

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