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AS5140H

Data Sheet - D e t a i l e d D e s c r i p t i o n

Figure 17. Connections for 5V / 3.3V Supply Voltages

7.9 Choosing the Proper Magnet

Typically the magnet should be 6mm in diameter and

≥2.5mm in height. Magnetic materials such as rare earth AlNiCo, SmCo5 or NdFeB are

given distance, along a concentric circle with a radius of 1.1mm (R1), should be in the range of ±45mT…±75mT. (see Figure 18).

7.9.1 Physical Placement of the Magnet

The best linearity can be achieved by placing the center of the magnet exactly over the defined center of the IC package as shown in Figure 19.

with reference to the edge of pin #1 (see Figure 19). This radius includes the placement tolerance of the chip within the SSOP-16 package (+/-

The vertical distance should be chosen such that the magnetic field on the die surface is within the specified limits (see Figure 18). The typical

distance “z” between the magnet and the package surface is 0.5mm to 1.8mm with the recommended magnet (6mm x 2.5mm). Larger gaps are

possible, as long as the required magnetic field strength stays within the defined limits. A magnetic field outside the specified range may still

produce usable results, but the out-of-range condition will be indicated by MagINCn (pin 1) and MagDECn (pin 2), (see Table 16).

Internal

VDD

LDO

I

N

T

E

R

F

A

C

E

VSS

VDD5V

VDD3V3

100n

4.5 - 5.5V

+

2,2... 10µF

DO

PWM_LSB

CLK

CSn

A_LSB_U

B_Dir_V

Index_W

Prog

Internal

VDD

LDO

I

N

T

E

R

F

A

C

E

VSS

VDD5V

VDD3V3

3.0 - 3.6V

+

DO

PWM_LSB

CLK

CSn

A_LSB_U

B_Dir_V

Index_W

Prog

100n

5V Operation

3.3V Operation