AS5134-ASSU austriamicrosystems, AS5134-ASSU Datasheet - Page 26

• Manufacturer Part Number: AS5134-ASSU
• Description: ENCODER, MAGNETIC, ROTARY, 8BIT, 20SSOP
• Manufacturer: austriamicrosystems

Specifications of AS5134-ASSU

• Brief Features: 9-Bit Multiturn Counter, User Programmable Zero Position And Sensitivity
• Supply Voltage Range: 4.5V To 5.5V
• Operating Temperature Range: -40°C To +140°C
• Digital Ic Case: RoHS Compliant
• Ic Function: Programmable High Speed Magnetic Rotary Encoder
• Rohs Compliant: Yes

AS5134
Data Sheet - D e t a i l e d D e s c r i p t i o n
Magnet Diameter and Vertical Distance
Note: Following is just an abstract taken from the elaborate application note on the Magnet.
The Linear Range
The Hall elements used in the AS5000-series sensor ICs are sensitive to the magnetic field component Bz, which is
the magnetic field vertical to the chip surface.
of a 6mm diameter, cylindrical NdFeB N35H magnet at an axial distance of 1mm between magnet and IC.
The highest magnetic field occurs at the north and south poles, which are located close to the edge of the magnet, at
~2.8mm radius
linearly within a radius of ~1.6mm. This linear range is the operating range of the magnet with respect to the Hall
sensor array on the chip. For best performance, the Hall elements should always be within this linear range.
Figure 18. 3D-Graph of Vertical Magnetic Field of a 6mm Cylindrical Magnet
www.austriamicrosystems.com
Bz [mT]
For more detailed information, please visit our homepage
Encoders
(see Figure
→ Magnet Application Notes
X -displacement [mm]
19). Following the poles towards the center of the magnet, the Bz field decreases very
Figure 18
BZ; 6mm magnet @ Z=1mm
Revision 1.8
shows a 3-dimensional graph of the Bz field across the surface
www.austriamicrosystems.com → Magnetic Rotary
area of X- Y-misalignment from
center: ±0.5mm
circle of Hall elements on
chip
Y -displacement [mm]
26 - 39