AS5115-HSST-500 austriamicrosystems, AS5115-HSST-500 Datasheet - Page 12

• Manufacturer Part Number: AS5115-HSST-500
• Description: IC ENCODER ROTARY 16-SOIC
• Manufacturer: austriamicrosystems
• Type: Linear, Rotary - Programmabler

Specifications of AS5115-HSST-500

• Sensing Range: 20mT Trip, 80mT Release
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 28mA
• Current - Output (max): 1mA
• Output Type: Analog, Digital
• Features: High Precision
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 16-SSOP (0.200", 5.30mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AS5115-HSST-500TR; AS5115-HSSU

AS5115
Preliminary Data Sheet - D e t a i l e d D e s c r i p t i o n
If the magnet is mounted in non-magnetic material, such as plastic or diamagnetic material, such as copper, the magnetic field distribution is not
disturbed. Even paramagnetic material, such as aluminium may be used. The magnet may be mounted directly in the shaft
(see Figure
8).
Note: Stainless steel may also be used, but some grades are magnetic. Therefore, steel with magnetic grades should be avoided.
Figure 9. Magnetic Field Lines in Iron Shaft
If the magnet is mounted in a ferromagnetic material, such as iron, most of the field lines are attracted by the iron and flow inside the metal shaft
(see Figure
9). The magnet is weakened substantially.
This configuration should be avoided!
Figure 10. Magnetic Field Lines with Spacer Between Magnet and Iron Shaft
If the magnet has to be mounted inside a magnetic shaft, a possible solution is to place a non-magnetic spacer between shaft and magnet, as
shown in
Figure
10. While the magnetic field is rather distorted towards the shaft, there are still adequate field lines available towards the sensor
IC. The distortion remains reasonably low.
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