AS5245-HQFT austriamicrosystems, AS5245-HQFT Datasheet - Page 2

• Manufacturer Part Number: AS5245-HQFT
• Description: IC ENCODER PROG 32-QFN
• Manufacturer: austriamicrosystems
• Type: Linear, Rotary Encoder - Programmabler

Specifications of AS5245-HQFT

• Sensing Range: 45mT ~ 75mT
• Voltage - Supply: 3 V ~ 3.6 V, 4.5 V ~ 5.5 V
• Current - Supply: 21mA
• Current - Output (max): 4mA
• Output Type: Quadrature with Index (Incremental)
• Features: Programmable
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 32-VQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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 ...........................................................................................................................................................
10 Package Drawings and Markings .........................................................................................................................................
11 Ordering Information .............................................................................................................................................................
www.austriamicrosystems.com/AS5245
4.1 Pin Descriptions.................................................................................................................................................................................... 4
6.1 System Specifications .......................................................................................................................................................................... 7
8.1 Mode_Index Pin.................................................................................................................................................................................. 10
8.2 Synchronous Serial Interface (SSI) ....................................................................................................................................................
8.3 Pulse Width Modulation (PWM) Output.............................................................................................................................................. 15
8.4 Analog Output..................................................................................................................................................................................... 16
9.1 Programming the AS5245 .................................................................................................................................................................. 17
9.2 Alignment Mode.................................................................................................................................................................................. 20
9.3 3.3V / 5V Operation ............................................................................................................................................................................ 21
9.4 Choosing the Proper Magnet.............................................................................................................................................................. 22
9.5 Failure Diagnostics ............................................................................................................................................................................. 23
9.6 Angular Output Tolerances ................................................................................................................................................................. 23
9.7 AS5245 Differences to AS5045.......................................................................................................................................................... 27
8.2.1 Serial Data Contents.................................................................................................................................................................. 11
8.2.2 Z-axis Range Indication (Push Button Feature, Red/Yellow/Green Indicator)........................................................................... 12
8.2.3 Incremental Mode ...................................................................................................................................................................... 12
8.2.4 Sync Mode................................................................................................................................................................................. 14
8.2.5 Sine/Cosine Mode ..................................................................................................................................................................... 14
8.2.6 Daisy Chain Mode ..................................................................................................................................................................... 14
8.3.1 Changing the PWM Frequency.................................................................................................................................................. 16
9.1.1 Zero Position Programming ....................................................................................................................................................... 17
9.1.2 OTP Memory Assignment.......................................................................................................................................................... 18
9.1.3 User Selectable Settings ........................................................................................................................................................... 18
9.1.4 OTP Default Setting................................................................................................................................................................... 19
9.1.5 Redundancy............................................................................................................................................................................... 19
9.1.6 Redundant Programming Option ............................................................................................................................................... 19
9.5.1 Magnetic Field Strength Diagnosis ............................................................................................................................................ 23
9.5.2 Power Supply Failure Detection ................................................................................................................................................ 23
9.6.1 Accuracy .................................................................................................................................................................................... 23
9.6.2 Transition Noise......................................................................................................................................................................... 25
9.6.3 High Speed Operation ............................................................................................................................................................... 25
9.6.4 Propagation Delays ................................................................................................................................................................... 26
9.6.5 Internal Timing Tolerance .......................................................................................................................................................... 26
9.6.6 Temperature .............................................................................................................................................................................. 26
9.6.7 Accuracy over Temperature ...................................................................................................................................................... 26
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