AS5020 Datasheet, PDF (1/11 Pages) ams AG – 6-BIT MAGNETIC ANGULAR POSITION ENCODER WITH SERIAL INTERFACE

6-BIT MAGNETIC
ANGULAR POSITION ENCODER
WITH SERIAL INTERFACE
Key Features
u Up to 64 positions within 360°
u Non contact switching
u Simple magnet as rotary encoder
u Zero position programmable (independent of
magnet orientation)
u Synchronous Serial Interface (SSI)
u Cascading is possible
u Chip Select Input
u Small 8-Pin SOIC (SMT) Package
u Temperature Range: -40°C ...+85°C
Ordering Information
Part Number Package
AS5020 SOIC 8
AS5020T SOIC8 Tape and Reel
General Description
The device provides the absolute angular position of a simple magnet that is placed under or
above the device’s surface. The device includes the Hall Sensor Array, signal conditioning and
post processing needed to generate a 6-bit binary code. The binary code can be easily
accessed by a Synchronous Serial Interface (SSI). The angle between the device and the
magnetic polarisation axis is exactly represented by one of 64 sectors (of 5.625° each) in the
full 360° range. Zero-Position Programming allows one time programming of a specific zero
position between the device and the magnet. The initial zero position is shown below.
60
56
52
0... initial
4
α8
12
48
N
S
16
44
20
Functional Block Diagram
40
24
36
28
32
4mm
Rev. n/c
Page 1/11
Feb 2001