AS5045-ASST datasheet(8/47 Pages) AMSCO

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ams Datasheet

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[v2-01] 2017-Jul-13

AS5045 − Electrical Characteristics

Magnetic Input Specification

Two-pole cylindrical diametrically magnetized source:

Figure 7:

Magnetic Input Specification

Symbol

Parameter

Conditions

Min

Typ

Max

Units

dmag

Diameter

Recommended magnet:

Ø 6mm x 2.5mm for

cylindrical magnets

tmag

Thickness

2.5

Bpk

Magnetic input field

amplitude

Required vertical component

of the magnetic field strength

on the die’s surface,

measured along a concentric

circle with a radius of 1.1mm

Boff

Magnetic offset

Constant magnetic stray field

± 10

Field non-linearity

Including offset gradient

fmag_abs

Input frequency

(rotational speed of

magnet)

146 rpm @ 4096

positions/rev.; fast mode

2.44

36.6rpm @ 4096

positions/rev.; slow mode

0.61

Disp

Displacement radius

Maximum offset between

defined device center and

magnet axis

0.25

Ecc

Eccentricity

Eccentricity of magnet center

to rotational axis

100

μm

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