AS5245-HQFT-500 austriamicrosystems, AS5245-HQFT-500 Datasheet - Page 22

• Manufacturer Part Number: AS5245-HQFT-500
• Description: IC ENCODER ROTARY 32-QFN
• Manufacturer: austriamicrosystems
• Type: Linear, Rotary Encoder - Programmabler

Specifications of AS5245-HQFT-500

• Featured Product: AS5245 – Dual Die Motion Sensing IC
• 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: Quadrature with Index (Incremental)
• Features: Programmable
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 32-VQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AS5245-HQFT-500TR

AS5245
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
9.4 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
radius of 1.1mm (R1), should be in the range of ±45mT…±75mT
Figure 16. Typical Magnet (6x3mm) and Magnetic Field Distribution
www.austriamicrosystems.com/AS5245
Vertical field
component
Vertical field
component
Bv
0
360
N
(45…75mT)
(see Figure
Revision 1.5
R1
typ. 6mm diameter
16).
R1 concentric circle;
radius 1.1mm
S
Magnet axis
Magnet axis
v
at a given distance, along a concentric circle with a
360
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