AS5045-ASST austriamicrosystems, AS5045-ASST Datasheet - Page 23

• Manufacturer Part Number: AS5045-ASST
• Description: IC ENCODER PROG 12-BIT 16-SSOP
• Manufacturer: austriamicrosystems
• Type: Linear, Rotary Encoder - Programmabler

Specifications of AS5045-ASST

• Sensing Range: 45mT ~ 75mT
• Voltage - Supply: 3 V ~ 3.6 V, 4.5 V ~ 5.5 V
• Current - Supply: 21mA
• Current - Output (max): 4mA
• Output Type: Digital, PWM, 12-Bit Serial
• Features: Programmable
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AS5045-ASSTTR

AS5045
Data Sheet
14 Choosing the Proper Magnet
Typically the magnet should be 6mm in diameter and ≥2.5mm in height. Magnetic materials such as rare earth
AlNiCo/SmCo5 or NdFeB are recommended.
The magnetic field strength perpendicular to the die surface has to be in the range of ±45mT…±75mT (peak).
The magnet’s field strength should be verified using a gauss-meter. The magnetic field B
a concentric circle with a radius of 1.1mm (R1), should be in the range of ±45mT…±75mT (see Figure 17).
Figure 17. Typical Magnet (6x3mm) and Magnetic Field Distribution
www.austriamicrosystems.com
Vertical field
component
N
R1
typ. 6mm diameter
S
Magnet axis
Magnet axis
N
S
R1 concentric circle;
radius 1.1mm
Revision 1.7
Vertical field
component
Bv
0
(45…75mT)
v
at a given distance, along
360
23 – 33