AS5245 AMSCO [austriamicrosystems AG], AS5245 Datasheet - Page 2

• Manufacturer Part Number: AS5245
• Manufacturer: AMSCO [austriamicrosystems AG]

AS5245
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/AS5245
4.1 Pin Descriptions.................................................................................................................................................................................... 5
6.1 Magnetic Input Specification................................................................................................................................................................. 8
6.2 System Specifications .......................................................................................................................................................................... 9
8.1 Mode_Index Pin.................................................................................................................................................................................. 12
8.2 Synchronous Serial Interface (SSI) .................................................................................................................................................... 13
8.3 Pulse Width Modulation (PWM) Output.............................................................................................................................................. 17
8.4 Analog Output..................................................................................................................................................................................... 18
9.1 Programming the AS5245 .................................................................................................................................................................. 19
9.2 Alignment Mode.................................................................................................................................................................................. 22
9.3 3.3V / 5V Operation ............................................................................................................................................................................ 23
9.4 Choosing the Proper Magnet.............................................................................................................................................................. 24
9.5 Failure Diagnostics ............................................................................................................................................................................. 25
9.6 Angular Output Tolerances ................................................................................................................................................................. 25
9.7 AS5245 Differences to AS5045.......................................................................................................................................................... 29
8.2.1 Serial Data Contents.................................................................................................................................................................. 13
8.2.2 Z-axis Range Indication (Push Button Feature, Red/Yellow/Green Indicator)........................................................................... 14
8.2.3 Incremental Mode ...................................................................................................................................................................... 14
8.2.4 Sync Mode................................................................................................................................................................................. 16
8.2.5 Sine/Cosine Mode ..................................................................................................................................................................... 16
8.2.6 Daisy Chain Mode ..................................................................................................................................................................... 16
8.3.1 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 ............................................................................................................................................... 21
9.5.1 Magnetic Field Strength Diagnosis ............................................................................................................................................ 25
9.5.2 Power Supply Failure Detection ................................................................................................................................................ 25
9.6.1 Accuracy .................................................................................................................................................................................... 25
9.6.2 Transition Noise......................................................................................................................................................................... 27
9.6.3 High Speed Operation ............................................................................................................................................................... 27
9.6.4 Propagation Delays ................................................................................................................................................................... 28
9.6.5 Internal Timing Tolerance .......................................................................................................................................................... 28
9.6.6 Temperature .............................................................................................................................................................................. 28
9.6.7 Accuracy over Temperature ...................................................................................................................................................... 28
Revision 1.3
2 - 33
12
19
11
1
1
1
4
6
7