AS5245 datasheet(8/33 Pages) AMSCO

Part #	AS5245

Description	Programmable 360쨘 Magnetic Angle Encoder with Absolute SSI and PWM Output

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Manufacturer	AMSCO [ams AG]

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AS5245

Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s

6.1 Magnetic Input Specification

TAMB = -40 to +150ºC, VDD5V = 3.0 to 3.6V (3V operation) VDD5V = 4.5 to 5.5V (5V operation) unless otherwise noted.

Two-pole cylindrical diametrically magnetized source:

IO

Output current

VDD5V: 4.5V

4

mA

VDD5V: 3V

2

DC Characteristics CMOS Output: PWM

VOH

High level output voltage

VDD5V–

0.5

V

VOL

Low level output voltage

VSS

+0.4

V

IO

Output current

VDD5V: 4.5V

4

mA

VDD5V: 3V

2

DC Characteristics CMOS Output: A, B, Index

VOH

High level output voltage

VDD5V–

0.5

V

VOL

Low level output voltage

VSS

+0.4

V

IO

Output current

VDD5V: 4.5V

4

mA

VDD5V: 3V

2

DC Characteristics Tri-state CMOS Output: DO

VOH

High level output voltage

VDD5V–

0.5

V

VOL

Low level output voltage

VSS

+0.4

V

IO

Output current

VDD5V: 4.5V

4

mA

VDD5V: 3V

2

IOZ

Tri-state leakage current

1

µA

Table 4. Magnetic Input Specification

Symbol

Parameter

Condition

Min

Typ

Max

Unit

dmag

Diameter

Recommended magnet: Ø 6mm x 2.5mm for

cylindrical magnets

46

mm

tmag

Thickness

2.5

mm

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

45

75

mT

Boff

Magnetic offset

Constant magnetic stray field

± 10

mT

Field non-linearity

Including offset gradient

5

%

fmag_abs

Input frequency

(rotational speed of magnet)

153 rpm @ 4096 positions/rev;

fast mode

2.54

Hz

38 rpm @ 4096 positions/rev; slow mode

0.63

Disp

Displacement radius

Maximum offset between defined device

center and magnet axis

0.25

mm

Ecc

Eccentricity

Eccentricity of magnet center to rotational axis

100

µm

Table 3. Electrical Characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Unit

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