Datasheet > MLX90323KDFAAA-000TU

MLX90323KDFAAA-000TU

更新时间： 2022-02-26 11:57:05

品牌	Logo	应用领域
迈来芯 - MELEXIS		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
25页	367K
描述
4 â 20 mA Loop Sensor Interface with Signal Conditioning and EEPROM

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MLX90323

4 – 20 mA Loop Sensor Interface

with Signal Conditioning and EEPROM

Features and Benefits

Application Examples

ꢀ Programmable Sensor Interface IC with 4 to

20 mA current loop output

ꢀ Power supply from 6 to 35V_DC

ꢀ Industrial pressure transducers.

ꢀ Strain gauges, accelerometers, position

sensors, etc.

ꢀ External or internal temperature sensor for

compensating temperature errors

ꢀ Any bridge type sensor with current loop

output.

Ordering code

Product Code Temperature Code

Package Code Option Code

Packing Form Code

MLX90323

AAA-000

Legend:

Temperature Code: K for Temperature Range -40°C to +125°C

Package Code:

Packing Form:

DF for SOIC300Mil

RE for Reel, TU for Tube

Ordering example:

MLX90323KDF-AAA-000-TU

1 Functional Diagram

2 General Description

The IC converts small changes of output voltage

of full Wheatstone resistive bridge (caused by

mechanical stimulus such as pressure, force,

torque, light or magnetic field) to large changes of

the IC output current.

FET

VDD1

OFC

FLT

VDD

Supply Regulator

3.5V

DAC_Offset

It removes parasitic DC level (Offset) from the

output bridge voltage and amplifies this signal

certain times (Gain). Offset and Gain are

temperature dependant, so the IC allows

temperature compensation of bridge parasitic DC

shift and sensitivity. Temperature can be

measured either by internal or external (resistor)

temperature sensor. The values of Offset and

Gain and their temperature dependency are

gotten during the calibration process and are

stored in the EEPROM..

OPA

2-bit

CSGN

VBP

VBN

x 35

GAIN

1.24kOhm

0.97V/V

0.48V/V

INV

Hardware Gain = 70

Coarse Offset

GAIN

CMO

CMN

TMP

Fine Gain DAC

IO1

IO2

Micro-

Processor

COMS

3.5V

External

Temp Sensor

ADC

Internal

Temp Sensor

Temp Amp Gain

GNTP [1:0]

GND

TSTB

The IC has industry standard 4 – 20 mA current

loop output interface and takes power directly from

2-wire signal line. The MLX90323 works properly

over wide voltage range (from 6 to 35 V) at the

signal line.

3901090323

Rev 003

Page 1 of 25

Data Sheet

Feb/12

12 3 4 5 6 7...25

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