AS5020 データシートの表示（PDF） - austriamicrosystems AG

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AS5020

6-BIT MAGNETIC ANGULAR POSITION ENCODER WITH SERIAL INTERFACE

austriamicrosystems AG 

6-Bit Magnetic Position Encoder –Data Sheet Rev.1.0

AS5020

Functional Description

Measurement Principle

A hall sensor array is used to convert the magnetic field distribution above the chip surface into

a binary code.

Measurement is enabled by PD/CS=0. After each measurement a 6-bit value is latched, with

the first falling edge of the CLK, into an output shift register.

The measured data is accessible via a Synchronous Serial Interface (SSI) by any µController

System.

Ratiometric measurement techniques together with hall sensor conditioning circuitry allow

robust tolerance to magnet misalignment.

Permanent Encoder Magnet

A simple two-pole magnet, e.g. a standard cylindrical permanent magnet that is diametric

magnetised, is needed.

α

3mm

B/mT

30

-30

S

N

S

α/°

180°

N

360°

Magnetic Field strength of at least ±30mTp is required at the package surface.

Standard magnet materials like rare earth AlNiCo / SmCo5 or NdFeB are recommended.

Please enquire for distributor references.

Rev. n/c

Page 3/11

Feb 2001

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