AMS AS5170 Series, Техническое описание, Страница: 1 / 47

ams Datasheet Page 1
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AS5170
High-Resolution On-Axis Magnetic
Angular Position Sensor
The AS5170 is a high-resolution angular position sensor for
precise absolute angle measurement. The AS5170 is available
with an analog output interface (AS5170A and AS5170C) or a
digital output interface (AS5170B and AS5170D). The latter can
be programmed as a PWM or a SENT-compliant output
interface.
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
AS5170 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 AS5170A/B/C/D and a Magnet
Ordering Information and Content Guide appear at end of
datasheet.
General Description