AS5145-HSSU
AS5145-HSSU Datasheet
AS5145/AS5145-I10/AS5145-I12
| Part | Datasheet |
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AS5145-HSSU |
AS5145-HSSU (pdf) |
| Related Parts | Information |
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AS5145-HSST |
AS5145-HSST |
| PDF Datasheet Preview |
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| AS5145/AS5145-I10/AS5145-I12 12-Bit Programmable Magnetic Rotary Encoder Data Sheet 1 General Description The AS5145 is a contact less magnetic rotary encoder for accurate angular measurement over a full turn of 360 degrees. It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device. To measure the angle, only a simple two-pole magnet, rotating over the center of the chip, is required. The magnet may be placed above or below the IC. An internal voltage regulator allows the AS5145 to operate at either 3.3V or 5V supplies. Figure Arrangement of AS5145 and Magnet 2 Key Features Contact less high resolution rotational position encoding over a full turn of 360 degrees Two digital 12 bit absolute outputs - Serial interface - Pulse width modulated PWM output Three incremental outputs Quadrature A/B 10 or 12-bit and Index output signal pre-programmed versions available AS5145I10/AS5145-I12 User programmable zero position Failure detection mode for magnet placement, monitoring, and loss of power supply Red-Yellow-Green indicators display placement of magnet in Z-axis Serial read-out of multiple interconnected AS5145 devices using Daisy Chain mode Tolerant to magnet misalignment and gap variations Wide temperature range - 40ºC to +150ºC Fully automotive qualified to AEC-Q100, grade 0 Small Pb-free package SSOP 16 5.3mm x 6.2mm 3 Applications Figure Block Diagram VDD3V3 The device is ideal for industrial applications like contactless rotary position sensing and robotics automotive applications like steering wheel position sensing, transmission gearbox encoder, head light position control, torque sensing, valve position sensing and replacement of high end potentiometers. VDD5V Mode_Index LDO 3.3V Hall Array Front end Amplifier Ang Mag PWM Interface Absolute Interface OTP Register Incremental Interface MagINCn MagDECn PWM DO CSn CLK PDIO DTEST1_A DTEST2_B 1 - 37 AS5145 Data Sheet - Applications 3 - 37 AS5145 Data Sheet - Pin Assignments 4 Pin Assignments Figure Pin Assignments Top View MagINCn MagDECn DTest1_A DTest1_B Mode_Index PDIO AS5145 VDD5V VDD3V3 Pin Description The following SSOP16 shows the description of each pin of the standard SSOP16 package Shrink Small Outline Package, 16 leads, body size 5.3mm x 6.2mmm see Figure Table Pin Description Pin Number 1 2 Pin Name MagINCn MagDECn Magnet Field Magnitude INCrease active low, indicates a distance reduction between the magnet and the device surface. see Table 9 Magnet Field Magnitude DECrease active low, indicates a distance increase between the device and the magnet. see Table 9 DTest1_A Test output in default mode DTest2_B Test output in default mode Must be left unconnected Mode_Index Select between slow open, low VSS and fast high mode. Internal pulldown resistor ~10kΩ . Negative Supply Voltage GND OTP Programming Input and Data Input for Daisy Chain mode. Internal PDIO pull-down resistor ~74kΩ . Connect to VSS if not used Data Output of Synchronous Serial Interface Clock Input of Synchronous Serial Interface Schmitt-Trigger input Chip Select, active low Schmitt-Trigger input, internal pull-up resistor ~50kΩ Pulse Width Modulation of approximately. 244Hz 1µs/step opt. 122Hz 2µs/step Must be left unconnected Must be left unconnected 4 - 37 Deleted Min value for tDOvalid in Table 6 updated ordering information Changed the Max value of tDOvalid in Table 6 to 413 Added “AS5145-I10/AS5145-I12” to the header Made some sentence corrections and spelling mistakes Updated Incremental Mode on page 15 with new information. Latest Datasheet 35 - 37 AS5145 Data Sheet - Ordering Information 11 Ordering Information The devices are available as the standard products shown in Table Table Ordering Information Model AS5145HSSU Description 12-Bit Programmable Magnetic Rotary Encoder Delivery Form Tubes AS5145HSST AS5145HSSU-I10 AS5145HSSU-I12 12-Bit Programmable Magnetic Rotary Encoder Pre-programmed 10 bit incremental Pre-programmed 12 bit incremental Tape & Reel Tubes Package SSOP 16 5.3mm x 6.2mm SSOP 16 5.3mm x 6.2mm SSOP 16 5.3mm x 6.2mm SSOP 16 5.3mm x 6.2mm 36 - 37 AS5145 Data Sheet - Ordering Information Copyrights Copyright 1997-2009, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG A-8141 Schloss Premstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: 37 - 37 |
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