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AS5130 PDF даташит

Спецификация AS5130 изготовлена ​​​​«austriamicrosystems AG» и имеет функцию, называемую «8 Bit Programmable Magnetic Rotary Encoder».

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Номер произв AS5130
Описание 8 Bit Programmable Magnetic Rotary Encoder
Производители austriamicrosystems AG
логотип austriamicrosystems AG логотип 

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AS5130 Даташит, Описание, Даташиты
Datasheet
AS5130
8-Bit Programmable Magnetic Rotary Encoder with Motion Detection
& Multiturn
1 General Description
2 Key Features
The AS5130 is a contactless magnetic rotary encoder for accurate
angular measurement over a full turn of 360º. It is a system-on-chip,
combining integrated Hall elements, analog front end and digital
signal processing in a single device. The angle can be measured
using only a simple two-pole magnet rotating over the center of the
chip. The magnet may be placed above or below the IC. 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. The AS5130 can be operated in pulsed mode
(Vsupply=off), which reduces the average power consumption
significantly. During Vsupply=off, the measured angle can be stored
using an internal storage register supplied by a low power voltage
line. This mode achieves very low power consumption during polling
of the rotary position of the magnet. If the position of the magnet
changes, then the motion detection feature wakes up an external
system. The device is capable of counting the amount of magnet
revolutions. The multi turn counter value is stored in a register and
can be read in addition to the angle information. Furthermore, any
arbitrary position can be set as zero-position. The system is tolerant
to misalignment, air gap variations, temperature variations and
external magnetic fields and high reliability due to non-contact
sensing.
360º contactless angular position encoding
Two digital 8-bit absolute outputs:
- Serial interface
- Pulse width modulated (PWM) output
User programmable zero position
High speed: up to 30000 rpm
Failure detection mode for magnet placement monitoring and
loss of power supply
Wide temperature range: -40ºC to +125ºC
Multi Turn counter / Movement detection
Small Pb-free package: SSOP-16 (5.3mm x 6.2mm)
Automotive qualified to AEC-Q100, grade 1
3 Applications
The AS5130 is an ideal solution for Ignition key position sensing,
Steering wheel position sensing, Transmission gearbox encoder,
Front panel rotary switches and replacement of Potentiometers.
Figure 1. AS5130 Block Diagram
SINP / SINN / COSP / COSN
AS5130
Ang
Sin
Tracking ADC
Zero
& Angle
Postion
Cos Decoder
Hall Array
&
Frontend
Amplifier
AGC
Mag
AGC
Power Management
OTP
PWM Decoder
Absolute
Serial
Interface
(SSI)
PWM
DIO
CS
DCLK
C1
CAO
PROG
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AS5130 Даташит, Описание, Даташиты
AS5130
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 Timing Characteristics .......................................................................................................................................................................... 8
6.2 Magnetic Input Range .......................................................................................................................................................................... 8
7 Detailed Description.................................................................................................................................................................. 9
7.1 Connecting the AS5130........................................................................................................................................................................ 9
7.1.1 Serial 3-Wire Connection (Default Setting).................................................................................................................................. 9
7.1.2 Serial 3-Wire Connection (OTP Programming Option).............................................................................................................. 11
7.1.3 1-Wire PWM Connection ........................................................................................................................................................... 11
7.1.4 Analog Output............................................................................................................................................................................ 12
7.1.5 Analog Sin/Cos Outputs with External Interpolator.................................................................................................................... 13
7.2 Serial Synchronous Interface (SSI) .................................................................................................................................................... 15
7.2.1 Commands of the SSI in Normal Mode ..................................................................................................................................... 15
7.2.2 Commands of the SSI in Extended Mode.................................................................................................................................. 16
7.3 OTP Programming.............................................................................................................................................................................. 17
7.4 Multi Turn Counter.............................................................................................................................................................................. 19
7.5 AS5130 Status Indicators ................................................................................................................................................................... 19
7.5.1 Lock Status Bit........................................................................................................................................................................... 19
7.5.2 Magnetic Field Strength Indicators ............................................................................................................................................ 19
7.6 “Pushbutton” Feature.......................................................................................................................................................................... 20
7.7 High Speed Operation ........................................................................................................................................................................ 21
7.7.1 Propagation Delay ..................................................................................................................................................................... 21
7.7.2 Sampling Rate ........................................................................................................................................................................... 21
7.7.3 Chip Internal Lowpass Filtering ................................................................................................................................................. 21
7.7.4 Digital Readout Rate.................................................................................................................................................................. 21
7.7.5 Total Propagation Delay of the AS5130 .................................................................................................................................... 21
7.8 Reduced Power Modes ...................................................................................................................................................................... 22
7.8.1 Low Power Mode ....................................................................................................................................................................... 22
7.8.2 Power Cycling Mode.................................................................................................................................................................. 23
7.8.3 Polling Mode .............................................................................................................................................................................. 24
8 Application Information ........................................................................................................................................................... 27
8.1 Application Example I: 3-Wire Sensor with Magnetic Field Strength Indication ................................................................................. 27
8.2 Application Example II: Low-Power Encoder...................................................................................................................................... 28
8.3 Application Example III: Polling Mode ................................................................................................................................................ 29
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AS5130 Даташит, Описание, Даташиты
AS5130
Datasheet - Contents
8.4 Accuracy of the Encoder System ....................................................................................................................................................... 30
8.4.1 Quantization Error...................................................................................................................................................................... 30
8.4.2 Vertical Distance of the Magnet................................................................................................................................................. 32
8.4.3 Choosing the Proper Magnet..................................................................................................................................................... 33
8.4.4 Magnet Placement..................................................................................................................................................................... 34
8.4.5 Lateral Displacement of the Magnet .......................................................................................................................................... 35
8.4.6 Magnet Size............................................................................................................................................................................... 36
9 Package Drawings and Markings ........................................................................................................................................... 37
9.1 Recommended PCB Footprint............................................................................................................................................................ 38
10 Ordering Information............................................................................................................................................................. 40
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