AS5035-ASSU austriamicrosystems, AS5035-ASSU Datasheet

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AS5035-ASSU

Manufacturer Part Number
AS5035-ASSU
Description
ENCODER, MAGNETIC, ROTARY, 8BIT, 16SSOP
Manufacturer
austriamicrosystems
Datasheet

Specifications of AS5035-ASSU

Brief Features
Failure Detection Mode, Accurate Programmable
Supply Voltage Range
3V To 3.6V, 4.5V To 5.5V
Operating Temperature Range
-40°C To +125°C
Digital Ic Case Style
SSOP
No. Of
RoHS Compliant
Ic Function
Programmable 64 PPR Incremental Magnetic Rotary Encoder
Rohs Compliant
Yes
1
The AS5035 is a magnetic incremental encoder with 64
quadrature pulses per revolution (8-bit resolution) and
index output.
Two diagnostic outputs are provided to indicate an out-of-
range condition of the magnetic field as well as movement
of the magnet in Z-axis. In addition a specific combination
of output states indicate a loss of power supply.
The AS5035 is available in a small 16pin SSOP package. It
can be operated at either 3.3V or 5V supplies.
1.1
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Revision 1.5
AS5035
PROGRAMMABLE 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER
Complete system-on-chip, including analog front end
and digital signal processing
2-channel quadrature and index outputs provide an
alternative to optical encoders
User programmable Zero positioning by OTP allows
easy assembly of magnet
Diagnostic features for operation safety
Ideal for applications in harsh environments due to
magnetic sensing principle
Robust system, tolerant to magnet misalignment, air
gap variations, temperature variations and external
magnetic stray fields
No calibration required
General Description
Figure 1: Typical arrangement of AS5035 and magnet
Benefits
www.austriamicrosystems.com
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Industrial applications:
Automotive applications:
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Full turn (360°) contactless angular position encoder
2 quadrature A/B outputs with 64 pulses per revolution
(ppr), 256 edges per revolution, 1.4° per step
Index output (one pulse per revolution)
Accurate user programmable zero position (0.35°)
Failure detection mode for magnet placement
monitoring and loss of power supply
Wide temperature range: - 40°C to + 125°C
Small lead-free package: SSOP 16 (5.3mm x 6.2mm)
- Robotics
- Replacement of optical encoders
- Flow meters
- Man-machine interface
- Power seat position sensing
- Power mirror position sensing
Key Features
Applications
Pin Configuration
Figure 2: AS5035 Pin configuration SSOP16
Page 1 of 17
DATA SHEET

Related parts for AS5035-ASSU

AS5035-ASSU Summary of contents

Page 1

... Two diagnostic outputs are provided to indicate an out-of- range condition of the magnetic field as well as movement of the magnet in Z-axis. In addition a specific combination of output states indicate a loss of power supply. The AS5035 is available in a small 16pin SSOP package. It can be operated at either 3. supplies. Figure 1: Typical arrangement of AS5035 and magnet 1.1 ...

Page 2

... AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER VDD5V LDO 3.3V Hall Array & Frontend Amplifier AS5035 4.1 Pin List & Description Pin # Name Type SSOP16 1 MagInc DO_OD 2 MagDec DO_OD N.C. test 6 Index DO 7 VSS Supply 8 Prog OTP_DO DO_T 10 OTP_CLK DI,ST 11 CSn ...

Page 3

... AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER 5 Connecting the AS5035 5.1 Power Supply 5.1.1 5.0V Operation Connect a 4.5V to 5.5V power supply to pin VDD5V only. Add a 1µF to 10µF buffer capacitor to pin VDD3V3 5.1.2 3.3V Operation Connect a 3.0V to 3.6 V power supply to both pins VDD5V and VDD3V3 ...

Page 4

... AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER 5.5 MagInc and MagDec Indicators These two pins are open-drain outputs with a maximum driving capability of 2mA @ 3.0V and 4mA @ 4.5V. MagINC, (Magnitude Increase) turns on, when the magnet is pushed towards the IC, thus when the magnetic field strength is increasing ...

Page 5

... Any position within a full turn can be defined as the permanent new index position. Figure 6: Hardware connection of AS5035 to AS50xx Demoboard for Zero Position Programming Revision 1.5 For Zero Position Programming, the magnet is turned to the mechanical zero position (e.g. the “off”-position of a rotary switch) and an automatic zero position programming is applied ...

Page 6

... CCW-bit (see Figure 7) allows for reversing the indicated direction, e.g. when the magnet is placed underneath the IC: CCW = 0 – angular value increases clockwise; CCW = 1 – angular value increases counterclockwise. Note: Further information on the required hardware and software for Zero Position programming of the AS5035 can be found in austriamicrosystems website: http:www.austriamicrosystems.com ...

Page 7

... Figure 9: Arrangement of Hall sensor array on chip (principle) With reference to Figure 9, a diametrically magnetized permanent magnet is placed above or below the surface of the AS5035. The chip uses an array of Hall sensors to sample the vertical vector of a magnetic field distributed across the device package surface. The area of magnetic sensitivity is a circular locus of 1 ...

Page 8

... AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER The magnet’s field strength perpendicular to the die surface should be verified using a gauss-meter. The magnetic field given distance, along a concentric v circle with a radius of 1.1mm (R1), should be in the range of ±45mT…±75mT. (see Figure 10). ...

Page 9

... High Speed Operation 10.3.1 Sampling Rate The AS5035 samples the angular value at a rate of 10k samples per second. Consequently, the incremental outputs are updated each 100µ stationary position of the magnet, this sampling rate creates no additional error ...

Page 10

... Temperature 10.5.1 Magnetic Temperature Coefficient One of the major benefits of the AS5035 compared to linear Hall sensors is that it is much less sensitive to temperature. While linear Hall sensors require a compensation of the magnet’s temperature coefficients, the AS5035 automatically compensates for the varying magnetic field strength over temperature. The magnet’ ...

Page 11

... AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER 12 Electrical Characteristics 12.1 Absolute Maximum Ratings (non operating) Stresses beyond those listed under “Absolute Maximum Ratings“ may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated under “Operating Conditions” is not implied ...

Page 12

... AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER 12.3.3 CMOS Outputs Index, OTP_DO Parameter High level output voltage Low level output voltage Output current 12.4 Magnetic Input Specification Two-pole cylindrical diametrically magnetised source: Parameter Symbol Min Diameter d mag Thickness t 2.5 mag Magnetic input field ...

Page 13

... AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER 12.6 Timing Characteristics Parameter Symbol Power-up time t Incremental Incremental outputs valid after power-up outputs valid System propagation delay Sampling rate 12.7 Incremental Output Signal Tolerances See Table 3 on page 9 12.8 Programming Conditions (operating conditions -40 to +125° ...

Page 14

... Packing Options Delivery: Tape and Reel (1 reel = 2000 devices) Tubes (1 box = 100 tubes á 77 devices) Order # AS5035 for delivery in tubes Order # AS5035TR for delivery in tape and reel Revision 1.5 Marking: AYWWIZZ A: Pb-free Identifier inch Y: Last Digit of Manufacturing Year Typ ...

Page 15

... AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER 14 Recommended PCB Footprint: Revision 1.5 Recommended Footprint Data mm inch A 9.02 0.355 B 6.16 0.242 C 0.46 0.018 D 0.65 0.025 E 5.01 0.197 www.austriamicrosystems.com Page ...

Page 16

... AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER 15 Contact 15.1 Headquarters austriamicrosystems AG A 8141 Schloss Premstätten, Austria Phone: +43 3136 500 0 Fax: +43 3136 525 01 industry.medical@austriamicrosystems.com www.austriamicrosystems.com 15.2 Sales Offices austriamicrosystems Germany GmbH Tegernseer Landstrasse 85 D-81539 München, Germany Phone: + Fax: + austriamicrosystems Italy S.r.l. ...

Page 17

... AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER Copyrights Copyright © 1997-2007, 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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