316BCG View Datasheet(PDF) - Unspecified

Part Name

Description

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316BCG

Rotary Position Sensor IC / MLX90316

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MLX90316

Rotary Position Sensor IC

Both components of the applied flux density B// are measured individually i.e. BX// and BY//. Two orthogonal

components (respectively BX⊥ and BY⊥) proportional to the parallel components (respectively BX// and BY//)

are induced through the IMC and can be measured by both respective pairs of conventional planar Hall

plates as those are sensitive to the flux density applied orthogonally to them and the IC surface.

While a magnet (diametrically magnetized) rotates above the IC as described on Figure 4, the sensing

stage provides two differential signals in quadrature (sine and cosine − Figure 6 and Figure 7)

400

300

200

100

0

-100

-200

-300

-400

0

90

180 270 360 450 540 630 720

Alpha (Degree)

BX

BY

Figure 6 – Magnetic Flux Density – BX ∝ cos(α) & BY ∝ sin(α)

2000

1500

1000

500

0

-500

-1000

-1500

-2000

0

90

180 270 360 450 540 630 720

Alpha (Degree)

VX

VY

Figure 7 – Tria⊗is® sensor front-end − Output signals − VX ∝ BX ∝ cos(α) & VY ∝ BY ∝ sin(α)

3901090316

Rev10

Page 9 of 45

Jul/13

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