as5035tr austriamicrosystems, as5035tr Datasheet

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as5035tr

Manufacturer Part Number
as5035tr
Description
Programmable 64ppr Incremental Magnetic Rotary Encoder
Manufacturer
austriamicrosystems
Datasheet
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.
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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

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as5035tr Summary of contents

Page 1

... Wide temperature range: - 40° 125°C - Small lead-free package: SSOP 16 (5.3mm x 6.2mm) 3 Applications Industrial applications: - Robotics - Replacement of optical encoders - Flow meters - Man-machine interface Automotive applications: - Power seat position sensing - Power mirror position sensing 4 Pin Configuration Figure 2: AS5035 Pin configuration SSOP16 www.austriamicrosystems.com DATA SHEET Page ...

Page 2

... Enable outputs A,B,I (see 5.4). Connect to VSS for normal operation Must be left open Must be left open Must be left open 3V regulator output 5V positive supply input Table 1: Pin description DO : digital push/pull output ST : Schmitt-Trigger input pd : internal pull-down resistor www.austriamicrosystems.com MagINCn MagDECn CSn Channel A Channel B Index OTP_CLK OTP_DO PROG Page ...

Page 3

... When Index is high, both A and B are low clear this state end enable the incremental outputs, Index CSn must be pulled low. The incremental outputs will remain enabled if CSn returns to high afterwards. CSn Prog OTP_CLK OTP_DO www.austriamicrosystems.com power-up of the AS5035: Page ...

Page 4

... A,B and Index pulses appear always at the same position for a given rotational direction no matter how often the rotational direction is reversed (see Figure 5). . Rotation Direction Mechanical Change Zero Position Hysteresis =0.7° Figure 5: Incremental quadrature outputs www.austriamicrosystems.com Mechanical Zero Position Index= 1.40625° Page ...

Page 5

... 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. The zero position is programmed to an accuracy of +/- 0.35°. www.austriamicrosystems.com Page ...

Page 6

... AS5035. Improper or accidental modification of the factory settings may render the chip unusable. Therefore the Zero Position and CCW programming is recommended only with austriamicrosystems proprietary hardware and software. Note: During the programming process, the transitions in the programming current may cause high voltage spikes generated by the inductance of the connection cable ...

Page 7

... Typically the magnet should be 6mm in diameter and ≥2.5mm in height. Magnetic materials such as rare earth AlNiCo, SmCo5 or NdFeB are recommended. Vertical field component Vertical field component Bv Figure 10: Typical magnet and magnetic field distribution www.austriamicrosystems.com ) is ± 75mT at the ,B (X1-X2) (Y1-Y2) typ. 6mm diameter N S Magnet axis ...

Page 8

... The total misalignment area of the graph covers a square of 2x2 mm (79x79mil) with a step size of 100µ ° Figure 13: Example of linearity error over XY misalignment www.austriamicrosystems.com S z 0.576mm ± 0.1mm 1.282mm ± 0.15mm )/2 is specified as better than min 800 500 200 -100 x -400 ...

Page 9

... Incremental encoders are usually required to produce no (peak) missing pulses up to several thousand rpm’s. Therefore, the AS5035 has a built-in interpolator, which ensures that there are no missing pulses at the incremental outputs for rotational speeds 10,000rpm. www.austriamicrosystems.com and 2.5mm in height. transition noise 270° ...

Page 10

... A,B and Index pins at the receiving side (µC, control unit, etc..). If the negative power line to the sensor is interrupted, all three outputs will be pulled high by the external pull-up resistors. This unique state again indicates a failure as it does not occur in normal operation. www.austriamicrosystems.com Page ...

Page 11

... I LEAK I -30 -100 iL Symbol Min Max V VSS+0 www.austriamicrosystems.com Note -40°F…+257°F 5V Operation 3.3V Operation (pin VDD5V and VDD3V3 connected) Unit Note V Normal operation V V CLK only µA µA CSn only, VDD5V: 5.0V Unit Note V VDD5V: 4.5V mA VDD5V: 3V µ ...

Page 12

... Deg TN 0.06 rms = 1 sigma (see 10.2) rms Hyst 0.704 deg V 1,37 2.2 2 supply voltage 3.3V (VDD3V3 1.08 1.9 2 supply voltage 3.3V (VDD3V3) off www.austriamicrosystems.com Unit Note VDD5V: 4.5V mA VDD5V Table 3 =25 °C. = -40 to +125°C – Err ) / 2 max min = -40 to +125°C amb Page ...

Page 13

... PROG 1.8 2 2.2 2 7.3 7.4 7 130 www.austriamicrosystems.com from first falling edge of CSn to PwrUp is PwrUp Unit Note Time between rising edge at Prog µs pin and rising edge of CSn µs Write data at the rising edge of ns CLK PROG µs µs µs kHz µ ...

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 Max WW: Manufacturing Week ...

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

... Fax: +39 02 4585 773 austriamicrosystems France S.A.R.L. 124, Avenue de Paris F-94300 Vincennes, France Phone: + Fax: + austriamicrosystems Switzerland AG Rietstrasse 4 CH 8640 Rapperswil, Switzerland Phone: +41 55 220 9008 Fax: +41 55 220 9001 austriamicrosystems UK, Ltd. 88, Barkham Ride, Finchampstead, Wokingham ...

Page 17

... No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. ...

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