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AS5045
Data Sheet
Table of Contents
1
2
3
4
5
5.1
5.2
6
6.1
6.2
6.3
6.4
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
6.5
6.6
6.7
6.7.1
6.7.2
6.8
7
8
8.1
8.1.1
8.1.2
8.2
9
9.1
10
11
General Description ................................................................................................................................ 1
Benefits................................................................................................................................................... 1
Key Features .......................................................................................................................................... 1
Applications ............................................................................................................................................ 1
Pinout ..................................................................................................................................................... 4
Pin Configuration .................................................................................................................................... 4
Pin Description........................................................................................................................................ 4
Electrical Characteristics ......................................................................................................................... 5
AS5045 Differences to AS5040 ............................................................................................................... 5
Absolute Maximum Ratings (non operating) ............................................................................................ 6
Operating Conditions .............................................................................................................................. 6
DC Characteristics for Digital Inputs and Outputs.................................................................................... 7
CMOS Schmitt-Trigger Inputs: CLK, CSn. (CSn = internal Pull-up).......................................................... 7
CMOS / Program Input: Prog................................................................................................................... 7
CMOS Output Open Drain: MagINCn, MagDECn .................................................................................... 7
CMOS Output: PWM ............................................................................................................................... 7
Tristate CMOS Output: DO ...................................................................................................................... 8
Magnetic Input Specification ................................................................................................................... 8
Electrical System Specifications .............................................................................................................. 9
Timing Characteristics............................................................................................................................10
Synchronous Serial Interface (SSI).........................................................................................................10
Pulse Width Modulation Output ..............................................................................................................11
Programming Conditions ........................................................................................................................11
Functional Description............................................................................................................................12
Mode Input Pin.......................................................................................................................................13
Synchronous Serial Interface (SSI) ........................................................................................................13
Data Content ..........................................................................................................................................14
Z-axis Range Indication (Push Button Feature, Red/Yellow/Green Indicator)..........................................14
Daisy Chain Mode ..................................................................................................................................15
Pulse Width Modulation (PWM) Output ..................................................................................................16
Changing the PWM Frequency...............................................................................................................17
Analog Output ........................................................................................................................................17
Programming the AS5045 ......................................................................................................................18
11.1 Zero Position Programming....................................................................................................................18
11.2 Repeated OTP Programming .................................................................................................................18
11.3 Non-permanent Programming ................................................................................................................19
11.4 Analog Readback Mode .........................................................................................................................20
12
13
14
Alignment Mode .....................................................................................................................................21
3.3V / 5V Operation ...............................................................................................................................22
Choosing the Proper Magnet..................................................................................................................23
14.1 Physical Placement of the Magnet .........................................................................................................24
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