Datasheet > MLX90320LFRLFR

MLX90320LFRLFR

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
迈来芯 - MELEXIS		传感器
页数	文件大小	规格书
32页	625K
描述
Automotive small sensor interface

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中文翻译

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数据手册

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MLX90320LFRLFR 数据手册

MLX90320

Automotive small sensor interface

Features and Benefits

Applications Examples

Suited cost optimized sensors: gain and

offset correction by programmable

coefficients

Higher order temperature compensation

provided for both gain and offset

External or internal temperature sensor

for compensation of temperature errors

Over-voltage protection

Pressure transducers, strain gauges,

accelerometers, position sensors, etc.

Steering systems (e.g. torque sensors)

Safety restraints systems (e.g. seat

occupant detection)

Braking systems (e.g. ABS, force)

Comfort systems (e.g. air conditioning)

Engine management (e.g. injection)

Any bridge type sensor

Fault detection and clamping levels

Ratio-metric output: 0 to 5V

Single Pin Digital Programming

Fully analog signal path

Ordering Information

Part No.

Temperature Code

Package Code

MLX90320LFR

L (-40°C to 150°C)

FR (SSOP 209 mil)

1 Functional diagram

2 General description

The MLX90320 covers the most typical resistive

type of Wheatstone bridge applications for use in an

automotive environment. It is a monolithic silicon

analog integrated sensor interface that converts

small changes in resistors, configured in a full

Wheatstone bridge on a sensing element, to large

output voltage variations.

VDD

7bits

Over- & Reverse

Voltage Protection

POR

Optional clamping

levels and fault

detections

DAC

CSOF

Ratiometric

Chopping

Oscillator: 4 MHz (+/-

15%) -> 250kHz dig

INM

INP

Gdido

Gdts

Gcs

IINV

VDD

DAC

FLT

10bits

VDD

TMP

Select

Application

mode Output

Programming

mode I/O

10bits

DAC

Fine Offset

Fine Gain

O1.(T-T1) + O2.(T-T1)×

X2.117

X(-1.667)

G1.(T-T1) G2.(T-T1)×

Fine Offset

Fine Gain

VDD

The signal conditioning includes gain adjustment,

offset control and second order temperature

compensation in order to accommodate variations of

the different resistive sensing elements.

Go,G1,G2

EEPROM

TMP

Oo,O1,O2

TMP

Gain

ALU

ADC

Go,G1,G2,Oo,O1,O2,T1, Gcs,

Gdido, Gdts, IINV, TMP_Select,

TMP_Offset, TMP_Gain,

10bits

TMP

Offset

CSOF, CLKAdj, Clamp_settings

Compensation values are stored in EEPROM and

can be reprogrammed with an interface circuit and a

provided software. The MLX90320 is programmed

with a single wire serial interface through the output

pin.

The user can specify on chip clamping levels thus

creating fault detection bands. By intercepting

various fault modes the MLX90320 is able to inform

about the reliability of its analog output signal.

3901090320

Rev 004

Page 1 of 32

Data Sheet

Mar/05

12 3 4 5 6 7...32

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