ROTARY ENCODER. AS5030 Datasheet

AS5030 ENCODER. Datasheet pdf. Equivalent

Part AS5030
Description 8-BIT PROGRAMMABLE HIGH SPEED ABSOLUTE MAGNETIC ROTARY ENCODER
Feature AS5030 8-BIT Programmable Magnetic Rotary Encoder AS5030 AS5030 8-BIT PROGRAMMABLE HIGH SPEED ABSO.
Manufacture austriamicrosystems AG
Datasheet
Download AS5030 Datasheet



AS5030
AS5030
8-Bit Programmable High Speed Magnetic Rotary Encoder
1 General Description
The AS5030 is a contactless magnetic rotary encoder for accurate
angular measurement over a full turn of 360°.
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 absolute angle measurement provides instant indication of the
magnet’s angular position with a resolution of 8 bit = 256 positions
per revolution. This digital data is available as a serial bit stream and
as a PWM signal.
In addition to the angle information, the strength of the magnetic field
is also available as a 6-bit code.
Data transmission can be configured for 1-wire (PWM), 2-wires
(CLK, DIO) or 3-wires (CLK, DIO, CS).
A software programmable (OTP) zero position simplifies assembly
as the zero position of the magnet does not need to be mechanically
aligned.
A Power Down Mode together with fast startup- and measurement
cycles allows for very low average power consumption and makes
the AS5030 also suitable for battery operated equipment.
Figure 1. AS5030 Block Diagram
2 Key Features
360° contactless angular position encoding
Two digital 8-bit absolute outputs:
- Serial interface
- Pulse width modulated (PWM) output
User programmable zero position
Direct measurement of magnetic field strength allows exact
determination of vertical magnet distance
Serial read-out of multiple interconnected AS5030 devices
using daisy chain mode
Wide magnetic field input range: 20 ~ 80mT
Wide temperature range: -40°C to +125°C
Small Pb-free package: TSSOP 16
3 Applications
The AS5030 is suitable for Contactless rotary position sensing,
Rotary switches (human machine interface), AC/DC motor position
control, Robotics and Encoder for battery operated equipment.
Sin / Sinn / Cos / Cosn
Hall Array
&
Front-end
Amplifier
Sin
Cos
AS5030
Tracking
ADC &
Angle
Decoder
Angle
Zero
Position
Mag
AGC
AGC
Power Management
OTP
PWM
Decoder
Absolute
Serial
Interface
( SSI )
PWM
DX
DIO
CS
CLK
C2
MagRngn
PROG
www.ams.com/AS5030
Revision 2.4
1 - 44



AS5030
AS5030
Datasheet - Contents
Contents
1 General Description .................................................................................................................................................................. 1
2 Key Features............................................................................................................................................................................. 1
3 Applications............................................................................................................................................................................... 1
4 Pin Assignments ....................................................................................................................................................................... 4
4.1 Pin Descriptions.................................................................................................................................................................................... 4
5 Absolute Maximum Ratings ...................................................................................................................................................... 5
6 Electrical Characteristics........................................................................................................................................................... 6
6.1 Operating Conditions............................................................................................................................................................................ 6
6.2 System Parameters .............................................................................................................................................................................. 6
6.3 Magnet Specifications .......................................................................................................................................................................... 7
6.4 Magnetic Field Alarm Limits ................................................................................................................................................................. 7
6.5 Hall Element Sensitivity Options........................................................................................................................................................... 7
6.6 Programming Parameters .................................................................................................................................................................... 8
6.7 DC Characteristics of Digital Inputs and Outputs ................................................................................................................................. 8
6.8 8-bit PWM Output ................................................................................................................................................................................. 9
6.9 Serial 8-bit Output................................................................................................................................................................................. 9
6.10 General Data Transmission Timings ................................................................................................................................................ 10
7 Detailed Description................................................................................................................................................................ 11
7.1 Connecting the AS5030...................................................................................................................................................................... 11
7.2 Serial 3-Wire R/W Connection............................................................................................................................................................ 11
7.3 Serial 3-Wire Read-only Connection .................................................................................................................................................. 13
7.4 Serial 2-Wire Connection (R/W Mode) ............................................................................................................................................... 14
7.5 Serial 2-Wire Continuous Readout ..................................................................................................................................................... 15
7.6 Serial 2-Wire Differential SSI Connection........................................................................................................................................... 15
7.7 1-Wire PWM Connection ................................................................................................................................................................ 16
7.8 Analog Output..................................................................................................................................................................................... 18
7.9 Analog Sin/Cos Outputs with External Interpolator ............................................................................................................................ 19
7.10 3-Wire Daisy Chain Mode................................................................................................................................................................. 20
7.11 2-Wire Daisy Chain Mode................................................................................................................................................................. 21
8 Application Information ........................................................................................................................................................... 22
8.1 AS5030 Programming ........................................................................................................................................................................ 23
8.1.1 OTP Programming Options ....................................................................................................................................................... 23
8.1.2 Reduced Power Mode Programming Options ........................................................................................................................... 23
8.2 AS5030 Read / Write Commands ...................................................................................................................................................... 23
8.2.1 16-bit Read Command............................................................................................................................................................... 23
8.2.2 16-bit Write Command............................................................................................................................................................... 24
8.2.3 18-bit OTP Read Commands ................................................................................................................................................... 24
8.2.4 18-bit OTP Write Commands .................................................................................................................................................... 25
8.3 OTP Programming Connection .......................................................................................................................................................... 26
8.3.1 Programming in Daisy Chain Mode ........................................................................................................................................... 26
8.4 Programming Verification ................................................................................................................................................................... 27
www.ams.com/AS5030
Revision 2.4
2 - 44





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