as5145h austriamicrosystems, as5145h Datasheet - Page 2
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as5145h
Manufacturer Part Number
as5145h
Description
12-bit Programmable Magnetic Rotary Encoder
Manufacturer
austriamicrosystems
Datasheet
1.AS5145H.pdf
(36 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AS5145H
Manufacturer:
AMS
Quantity:
20 000
Company:
Part Number:
as5145h-HSST
Manufacturer:
AMS
Quantity:
1 000
AS5145
Data Sheet - C o n t e n t s
Contents
1 General Description ..................................................................................................................................................................
2 Key Features.............................................................................................................................................................................
3 Applications...............................................................................................................................................................................
4 Pin Assignments .......................................................................................................................................................................
5 Absolute Maximum Ratings ......................................................................................................................................................
6 Electrical Characteristics...........................................................................................................................................................
7 Timing Characteristics ............................................................................................................................................................
8 Detailed Description................................................................................................................................................................
9 Application Information ...........................................................................................................................................................
www.austriamicrosystems.com/AS5145
4.1 Pin Descriptions.................................................................................................................................................................................... 4
6.1 Magnetic Input Specification................................................................................................................................................................. 8
6.2 System Specifications .......................................................................................................................................................................... 9
8.1 Mode_Index Pin.................................................................................................................................................................................. 12
8.2 Pulse Width Modulation (PWM) Output.............................................................................................................................................. 17
8.3 Analog Output..................................................................................................................................................................................... 18
9.1 Programming the AS5145 .................................................................................................................................................................. 19
9.2 Alignment Mode.................................................................................................................................................................................. 23
9.3 3.3V / 5V Operation ............................................................................................................................................................................ 23
9.4 Selecting Proper Magnet .................................................................................................................................................................... 24
9.5 Simulation Modeling ........................................................................................................................................................................... 26
9.6 Failure Diagnostics ............................................................................................................................................................................. 27
9.7 Angular Output Tolerances ................................................................................................................................................................. 27
8.1.1 Synchronous Serial Interface (SSI) ........................................................................................................................................... 13
8.1.2 Incremental Mode ...................................................................................................................................................................... 14
8.1.3 Sync Mode................................................................................................................................................................................. 16
8.1.4 Sin/Cosine Mode ....................................................................................................................................................................... 16
8.1.5 Daisy Chain Mode ..................................................................................................................................................................... 16
8.2.1 Changing the PWM Frequency.................................................................................................................................................. 18
9.1.1 Zero Position Programming ....................................................................................................................................................... 19
9.1.2 OTP Memory Assignment.......................................................................................................................................................... 20
9.1.3 User Selectable Settings ........................................................................................................................................................... 20
9.1.4 OTP Default Setting................................................................................................................................................................... 21
9.1.5 Redundancy............................................................................................................................................................................... 21
9.1.6 Redundant Programming Option ............................................................................................................................................... 22
9.1.7 OTP Register Entry and Exit Condition ..................................................................................................................................... 22
9.4.1 Physical Placement of the Magnet ............................................................................................................................................ 25
9.4.2 Magnet Placement..................................................................................................................................................................... 26
9.6.1 Magnetic Field Strength Diagnosis ............................................................................................................................................ 27
9.6.2 Power Supply Failure Detection ................................................................................................................................................ 27
9.7.1 Accuracy .................................................................................................................................................................................... 27
9.7.2 Transition Noise......................................................................................................................................................................... 29
9.7.3 High Speed Operation ............................................................................................................................................................... 29
9.7.4 Propagation Delays ................................................................................................................................................................... 29
9.7.5 Internal Timing Tolerance .......................................................................................................................................................... 30
9.7.6 Temperature .............................................................................................................................................................................. 30
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