AS5304 datasheet(10/31 Pages) AMSCO

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[v2-00] 2017-May-03

AS5304/AS5306 − Detailed Description

The AS5304/AS5306 require a multi-pole magnetic strip or ring

with a pole length of 2mm (4mm pole pair length) on the

AS5304, and a pole length of 1.2mm (2.4mm pole pair length)

on the AS5306. The magnetic field strength of the multi-pole

magnet should be in the range of 5mT to 60mT at the chip

surface.

The Hall elements on the AS5304/AS5306 are arranged in a

linear array.

By moving the multi-pole magnet over the Hall array, a

sinusoidal signal (SIN) is generated internally. With proper

configuration of the Hall elements, a second 90° phase shifted

sinusoidal signal (COS) is obtained. Using an interpolation

circuit, the length of a pole pair is divided into 160 positions

and further decoded into 40 quadrature pulses.

An Automatic Gain Control provides a large dynamic input

range of the magnetic field.

An Analog output pin (AO) provides an analog voltage that

changes with the strength of the magnetic field (see The AO

Output).

Electrical Connection

The supply pins VDD, VDDP and VDDA are connected to +5V.

Pins VSS and TEST_GND are connected to the supply ground. A

100nF decoupling capacitor close to the device is

recommended.

Detailed Description

AS5304 Datasheet(PDF) 10 Page - ams AG