AS5261-HMFP datasheet(2/33 Pages) AMSCO

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AS5261

12-Bit Automotive Angle Position Sensor

www.ams.com

Revision 1.1

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1 General Description

The AS5261 is a contactless magnetic angle position sensor for

accurate angular measurement over a full turn of 360°. A sub range

can be programmed to achieve the best resolution for the

application. It is a system-on-chip, combining integrated Hall

elements, analog front end, digital signal processing and best in

class automotive protection features in a single device.

To measure the angle, only a simple two-pole magnet, rotating over

the center of the chip, is required. The magnet may be placed above

or below the IC.

The absolute angle measurement provides instant indication of the

magnet’s angular position with a resolution of 0.022° = 16384

positions per revolution. According to this resolution the adjustment

of the application specific mechanical positions are possible. The

angular output data is available over a 12 bit PWM output.

The AS5261 operates at a supply voltage of 5V and the supply and

output pins are protected against overvoltage up to +20V. In addition

the supply pins are protected against reverse polarity up to –20V.

Figure 1. Typical Arrangement of AS5261 and magnet

2 Key Features



360º contactless high resolution angular position encoding



User programmable start and end point of the application region

+ linearization.



User programmable clamping levels and programming of the

transition point.



Wide temperature range: - 40ºC to + 150ºC



Small Pb-free package: MLF 16 6x6 (with dimple)



Broken GND and VDD detection

3 Benefits



Unique fully differential solution



Best protections for automotive applications



Easy to program



Additional linearization points for output characteristic



Ideal for applications in harsh environments due to contactless

position sensing



Robust system, tolerant to magnet misalignment, air gap

variations, temperature variations and external magnetic fields



High inherent accuracy



Stacked die redundant approach

4 Applications

The AS5261 is ideal for automotive applications like throttle and

valve position sensing, gearbox position sensor, pedal position

sensing and contactless potentiometers.

AS5261-HMFP Datasheet(PDF) 2 Page - ams AG

AS5261-HMFP Datasheet(HTML) 2 Page - ams AG

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