AS5171 Datasheet, PDF (1/42 Pages) ams AG – Accurate angle measurement

General Description
AS5171
High-Resolution On-Axis Magnetic
Angular Position Sensor
The AS5171 is a high-resolution angular position sensor for
precise absolute angle measurement. The AS5171 is available
with an analog output interface (AS5171A) or a digital output
interface (AS5171B).
Based on a Hall sensor technology, this device measures the
orthogonal component of the flux density (Bz) over a full-turn
rotation and compensates for external stray magnetic fields
with a robust architecture based on a 14-bit sensor array and
analog front-end (AFE). A sub-range can be programmed to
achieve the best resolution for the application. To measure the
angle, only a simple two-pole magnet rotating over the center
of the package is required. The magnet may be placed above
or below the device. The absolute angle measurement provides
an instant indication of the magnet’s angular position. The
AS5171 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.
The AS5171A and AS5171B are available in a SIP package
(System in Package).
The package has integrated the AS5171 sensor die together
with the decoupling capacitors necessary to pass system level
ESD and EMC requirements. No additional components and PCB
on the sensor side is needed.
The product is defined as SEooC (Safety Element out of Context)
according ISO26262.
Ordering Information and Content Guide appear at end of
datasheet.
ams Datasheet
[v1-01] 2016-Feb-17
Page 1
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