AS5311-ASST austriamicrosystems, AS5311-ASST Datasheet
AS5311-ASST
Specifications of AS5311-ASST
Related parts for AS5311-ASST
AS5311-ASST Summary of contents
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... Figure 1 and Figure 3). Figure 1. AS5311 with Multi-pole Magnetic Strip for Linear Motion Sensing www.austriamicrosystems.com Preliminary Data Sheet The AS5311 is available in a Pb-free TSSOP-20 package and qualified for an ambient temperature range from -40°C to +125°C. 2 Key Features Two 12-bit digital absolute outputs : ...
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... AS5311 Data Sheet Figure 3. AS5311 with Multi-pole Ring Magnets for Off-axis Rotary Motion Sensing www.austriamicrosystems.com Revision 1. ...
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... AS5311 Data Sheet 4 Table of Contents 1 General Description ...................................................................................................................... 1 2 Key Features ................................................................................................................................ 1 3 Applications.................................................................................................................................. 1 4 Table of Contents ......................................................................................................................... 3 5 Pinout .......................................................................................................................................... 5 5.1 Pin Assignments ..................................................................................................................... 5 5.2 Pin Description ....................................................................................................................... 5 6 Electrical Characteristics............................................................................................................... 6 6.1 Absolute Maximum Ratings ..................................................................................................... 6 6.2 Operating Conditions .............................................................................................................. 7 6.3 DC Characteristics for Digital Inputs and Outputs ..................................................................... 7 6.3.1 CMOS Schmitt-Trigger Inputs: CLK, CSn (CSn = internal Pull-up) ...
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... AS5311 Data Sheet 12 AS5311 Off-axis Rotary Applications ........................................................................................ 20 13 Package Drawings and Marking ................................................................................................ 21 14 Ordering Information ................................................................................................................ 22 15 Recommended PCB Footprint................................................................................................... 22 16 Revision History ...................................................................................................................... 23 17 Copyrights ............................................................................................................................... 23 18 Disclaimer ............................................................................................................................... 23 www.austriamicrosystems.com Revision 1. ...
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... AS5311 Data Sheet 5 Pinout 5.1 Pin Assignments Figure 4. AS5311 Pin Configuration, TSSOP-20 5.2 Pin Description Pin 4(A), 5(B) and 7(Index) are the incremental outputs. The incremental output has a resolution of 10-bit per pole pair, resulting in a step length of 1.95µm. Note that Pin 14 (CSn) must be low to enable the incremental outputs. ...
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... AS5311 Data Sheet Table 1. Pin Description Pin Symbol MagINCn DO_OD 3 MagDECn DO_OD Index 8 VSS 9 Prog DI_PD CLK DI CSn DI_PU PWM VDD3V3 19 VDD5V 20 NC DO_OD digital output open drain DO digital output DI_PD digital input pull-down DI_PU digital input pull-up 6 Electrical Characteristics 6.1 Absolute Maximum Ratings Stresses beyond those listed under “ ...
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... AS5311 Data Sheet Parameter Body temperature (Lead-free package) Humidity non-condensing 6.2 Operating Conditions Table 3. Operating Conditions Parameter Ambient temperature Supply current Supply voltage at pin VDD5V Voltage regulator output voltage at pin VDD3V3 Supply voltage at pin VDD5V Supply voltage at pin VDD3V3 6.3 DC Characteristics for Digital Inputs and Outputs 6 ...
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... AS5311 Data Sheet 6.3.4 Tristate CMOS Output: DO Operating conditions -40 to +125°C, VDD5V = 3.0-3.6V (3V operation) VD D5V = 4.5-5.5V (5V operation) unless amb otherwise noted. Parameter High level output voltage Low level output voltage Output current 6.4 Magnetic Input Specification Operating conditions -40 to +125°C, VDD5V = 3.0-3.6V (3V operation) VD D5V = 4.5 - 5.5V (5V operation) unless amb otherwise noted ...
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... AS5311 Data Sheet Parameter Symbol Integral non-linearity (over temperature) Differential non-linearity Transition noise Power-on reset thresholds On voltage; 300mV typ. hysteresis Off voltage; 300mV typ. hysteresis Power-up time System propagation delay absolute output : System propagation delay incremental output Internal sampling rate for ...
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... A and B for every pole pair. The outputs A and B are phase shifted by 90 electrical degrees, which results in 1024 edges per pole pair. As the incremental outputs are also repeated with every pole pair, a constant train of pulses is generated as the magnet moves over the chip. Figure 5. AS5311 Outputs Relative to Magnet Position www.austriamicrosystems.com Min ...
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... AS5311 Data Sheet 7.1 Incremental Outputs Figure 6 shows the two-channel quadrature output of the AS5311. Output A leads output B when the magnet is moving from right to left and output B leads output A when the magnet is moving from left to right (see Figure 14). Figure 6. Incremental Outputs Increm en tal outputs ...
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... AS5311 Data Sheet 7.2 Incremental Output Hysteresis Figure 7. Hysteresis Illustration To avoid flickering incremental outputs at a stationary magnet position, a hysteresis is introduced. In case of a movement direction change, the incremental outputs have a hysteresis of 2 LSB. For constant movement directions, every magnet position change is indicated at the incremental outputs (see Figure 6). If for example the magnet moves from position „ ...
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... AS5311 Data Sheet A value of zero or close to zero indicates a missing magnet. Figure 9. Synchronous Serial Interface with Magnetic Field Strength Data If CSn changes to logic low, Data Out (DO) will change from high impedance (tri-state) to logic high and the read-out will be initiated. After a minimum time t CLK FE, Each subsequent rising CLK edge shifts out one bit of data ...
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... Z-axis Range Indication (“Red/Yellow/Green” Indicator) The AS5311 provides several options of detecting the magnet distance by indicating the strength of the magnetic field. Signal indicators MagINCn and MagDECn are available both as hardware pins (pins 1 and 2) and as status bits in the serial data stream (see Figure 8). Additionally the LIN status bit indicates the non- recommended “ ...
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... Figure 10. PWM Output Signal 9 3. Operation The AS5311 operates either at 3.3V ±10 ±10%. This is made possible by an internal 3.3V Low- Dropout (LDO) Voltage regulator. The internal supply voltage is always taken from the output of the LDO, meaning that the internal blocks are always operating at 3.3V. ...
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... The AS5311 accepts magnetic multi-pole strip or ring magnets with a pole length of 1.0mm. Recommended magnet materials include plastic or rubber bonded ferrite or Neodymium magnets not recommended to use the AS5311 with other pole lengths as this will create additional nonlinearities. Figure 12. Additional Error from Pole Length Mismatch 70 ...
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... The lateral movement range (stroke) is limited by the area at which all Hall sensors of the IC are covered by the magnet in either direction. The Hall array on the AS5311 has a length of 2.0mm, hence the total stroke is maximum lateral Stroke = Length of active area – length of Hall array Note: active area in length is defined as the area containing poles with the specified 1 ...
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... AS5311 Data Sheet Figure 14. Alignment of Magnet Strip with AS5311 Sensor IC position value increases rightmost magnet position Die C/L vertical airgap www.austriamicrosystems.com 3.0475±0.235 1. 1.00 3.0475±0.235 magnet strip carrier see text 1.00 ± 0.1 Revision 1.04 leftmost magnet position Die C/L ...
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... The graph shows the accuracy over a stroke of 8mm at two different vertical gaps, 0.2mm and 0.4mm. As displayed, the accuracy is virtually identical (about +/- 10µm) for both airgaps due to the automatic gain control of the AS5311 which compensates for airgap changes. The accuracy depends greatly on the length and strength of each pole and hence from the precision of the tool used for magnetization as well as the homogeneity of the magnet material ...
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... AS5311 Data Sheet 12 AS5311 Off-axis Rotary Applications The AS5311 can also be used as an off-axis rotary encoder, as shown in Figure 3. In such applications, the multi-pole magnetic strip is replaced by a multi-pole magnetic ring. The ring can have radial or axial magnetization. Figure 16. Angular Resolution and Maximum Speed versus Ring Diameter AS5311 off-axis rotary resolution & ...
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... AS5311 Data Sheet 13 Package Drawings and Marking 20 Lead Thin Shrink Small Outline Package – TSSOP20 Figure 17. AS5311 Package Dimensions and Hall Array Location www.austriamicrosystems.com Revision 1. ...
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... Ordering Information Delivery: Tape and Reel: 1 reel = 1000 devices 1 reel = 4500 devices Tubes: 1 box = 100 tubes à 74 devices Order # AS5311ASSU for delivery in tubes Order # AS5311ASST for delivery in tape and reel 15 Recommended PCB Footprint www.austriamicrosystems.com Marking: AYWWIZZ A: Pb-Free Identifier inch Y: Last Digit of Manufacturing Year ...
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... AS5311 Data Sheet 16 Revision History Revision Date 1.01 26-Jun-09 1.02 09-Apr-10 1.03 24-Sep-10 1.04 14-March-11 17 Copyrights Copyright © 2010, 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 ...
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... AS5311 Data Sheet For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com Revision 1. ...