6-BIT MAGNETIC
ANGULAR POSITION ENCODER
WITH SERIAL INTERFACE
Key Features
u
Up to 64 positions within 360擄
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擄C ...+85擄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鈥檚 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擄 each) in the
full 360擄 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
0... initial
4
56
52
偽
N
S
8
12
48
44
16
20
40
36
24
Functional Block Diagram
32
4mm
28
Rev. n/c
Page 1/11
Feb 2001