AS5130_07 datasheet(2/42 Pages) AMSCO

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AS5130

8-Bit Programmable Magnetic Rotary Encoder with Motion Detection

& Multiturn

www.austriamicrosystems.com/AS5130

Revision 1.12

1 - 41

Datasheet

1 General Description

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.

Figure 1. AS5130 Block Diagram

2 Key Features

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.

Tracking ADC

& Angle

Decoder

Hall Array

Frontend

Amplifier

Power Management

OTP

Absolute

Serial

Interface

(SSI)

DIO

PWM

DCLK

PROG

PWM Decoder

Cos

Sin

AGC

Mag

Zero

Postion

AGC

Ang

CAO

AS5130

SINP / SINN / COSP / COSN

AS5130 数据表(PDF) 2 Page - ams AG

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