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AS5134

Datasheet - Contents

Contents

1 General Description .................................................................................................................................................................. 1

2 Key Features............................................................................................................................................................................. 1

3 Applications............................................................................................................................................................................... 1

4 Pin Assignments ....................................................................................................................................................................... 3

4.1 Pin Descriptions.................................................................................................................................................................................... 3

5 Absolute Maximum Ratings ...................................................................................................................................................... 4

6 Electrical Characteristics...........................................................................................................................................................

5

6.1 Timing Characteristics .......................................................................................................................................................................... 6

7 Detailed Description.................................................................................................................................................................. 7

7.1 Connecting the AS5134........................................................................................................................................................................ 7

7.2 Serial 3-Wire R/W Connection.............................................................................................................................................................. 8

7.3 Serial 3-Wire Read-only Connection .................................................................................................................................................... 9

7.4 Serial 2-Wire Connection (R/W Mode) ............................................................................................................................................... 10

7.5 Serial 2-Wire Differential SSI Connection........................................................................................................................................... 11

7.6 1-Wire PWM Connection.................................................................................................................................................................... 12

7.7 Analog Output..................................................................................................................................................................................... 14

7.8 Quadrature A/B/Index Output............................................................................................................................................................. 14

7.9 Brushless DC Motor Commutation Mode........................................................................................................................................... 15

7.10 Daisy Chain Mode ............................................................................................................................................................................ 15

7.11 Serial Synchronous Interface (SSI) .................................................................................................................................................. 18

7.12 Redundancy ..................................................................................................................................................................................... 20

8 Application Information ...........................................................................................................................................................

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8.1 AS5134 Programming ........................................................................................................................................................................ 21

8.1.1 OTP Programming Connection.................................................................................................................................................. 21

8.1.2 Programming Verification .......................................................................................................................................................... 22

8.2 AS5134 Status Indicators................................................................................................................................................................... 24

8.2.1 Lock Status Bit........................................................................................................................................................................... 24

8.2.2 Magnetic Field Strength Indicators ............................................................................................................................................ 24

8.3 Multi Turn Counter.............................................................................................................................................................................. 25

8.4 High Speed Operation........................................................................................................................................................................ 25

8.4.1 Propagation Delay ..................................................................................................................................................................... 25

8.4.2 Digital Readout Rate.................................................................................................................................................................. 26

8.4.3 Low Power Mode ....................................................................................................................................................................... 26

9 Package Drawings and Markings ...........................................................................................................................................

27

9.1 Recommended PCB Footprint............................................................................................................................................................ 29

10 Ordering Information.............................................................................................................................................................

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