MLX90333 datasheet(21/48 Pages) MELEXIS

21 / 48 page

MLX90333

Tria⊗

⊗

⊗is® Position Sensor

3901090333

Page 21 of 48

Data Sheet

Rev. 007

Jul/2013

13.

Description of End-User Programmable Items

13.1. Output Configuration

The parameter MAINMODE defines the output stages configuration

MAINMODE

OUT1

OUT2

ALPHA

BETA

ALPHA

ALPHA DERIVATE / SWITCH(22)

BETA

BETA DERIVATE / SWITCH(22)

13.2. Output Mode

The MLX90333 outputs type is defined by the Output Mode parameter.

Parameter

Value

Description

Analog Output Mode

Analog Rail-to-Rail

PWM Output Mode

Low Side (NMOS)

Push-Pull

Serial

N/A

Low Side (NMOS)

13.2.1. Analog Output Mode

The Analog Output Mode is a rail-to-rail and ratiometric output with a push-pull output stage configuration

allows the use of a pull-up or pull-down resistor.

13.2.2. PWM Output Mode

If one of the PWM Output modes is selected, the output signal is a digital signal with Pulse Width

Modulation (PWM).

In mode 5, the output stage is an open drain NMOS transistor (low side), to be used with a pull-up resistor

to VDD.

In mode 7, the output stage is a push-pull stage for which Melexis recommends the use of a pull-up

resistor to VDD.

The PWM polarity of the Out 1 (Out 2) is selected by the PWMPOL1 (PWMPOL2) parameter:

•

PWMPOL1 (PWMPOL2) = 0 for a low level at 100%

•

PWMPOL1 (PWMPOL2) = 1 for a high level at 100%

The PWM frequency is selected by the PWM_Freq parameter.

PWM Frequency Code

Oscillator Mode

Pulse-Width Modulation Frequency (Hz)

100

200

500

1000

Low Speed

35000

17500

7000

3500

22 Derivate = BCH , Switch = BCT

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