AS5170 datasheet(1/47 Pages) AMSCO

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ams Datasheet

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[v1-01] 2016-Apr-11

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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) or a digital output

interface (AS5170B). 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/AS5170B and a Magnet

Ordering Information and Content Guide appear at end of

datasheet.

General Description

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