MLX90215LVA-LA03 datasheet, PDF

Datasheet> All Categories > The sensor> MLX90215LVA-LA03

Preview

MLX90215LVA-LA03: DescriptionIC sensor lin hall 100mv/MT 1V; CategoryThe sensor; File Size492KB，46 Pages; ManufacturerMelexis; Websitehttps://www.melexis.com/zh; Environmental Compliance

Download Datasheet View All

MLX90215LVA-LA03 Overview

IC sensor lin hall 100mv/MT 1V

Preview

Download Datasheet

View All

Section 3 - Applications

Section 3 - Applications

Introduction

Solid-state switches have been available for many years. In various applications, Hall- Effect Sensors (Hall ICs)

have replaced mechanical contact switches completely. In the mid 1980’s the ignition points in automobiles

were replaced by Hall ICs. The automotive market now consumes more than 40 million Hall ICs per year.

Melexis has been manufacturing high quality Hall-Effect Sensors and signal conditioning ASICs for nearly a

decade, and has pioneered the next generation of programmable sensors and sensor interfaces.

This section contains some fundamental information about Hall-Effect sensors, magnetics, and the added value

of programmable sensors and sensor interfaces. It is intended to be useful for the novice as well as the expert.

Design Kit Materials

This section refers to magnets and devices which are included in the Melexis Hall-Effect Sensor Design Kit or

the MLX90308 demo kit. Contents of these kits are listed below. These items can be ordered directly from the

factory by contacting Melexis at (603) 223-2362.

Hall-Effect Sensor Design Kit

Square Neodymium, sample magnet “A” (approximately 200mT)

Cylindrical Neodymium, sample magnet “B” (approximately 380mT)

Gauss meter circuit diagram

MLX90215 linear Hall Effect sensor and calibration chart

Samples of various Melexis Hall ICs

Sensor Interface Demo Kit

MLX90308 demo board

Serial interface cable

MLX90308 programming software (31/2” Diskette)

Note: Kit requires IBM compatible PC with a free COM port

Melexis Reference Magnets

Melexis offers calibrated magnets for use as a reference magnetic field available in 3 ranges. These are for ref-

erence only, and are not calibrated from a traceable source nor are they intended for calibration of any type of

instrumentation. They are intended for programming MLX linear Hall ICs, and for general lab reference.

SDAP-RM-10

SDAP-RM-50

SDAP-RM-100

10mT calibrated reference magnet

50mT calibrated reference magnet

100mT calibrated reference magnet

3-1

Section 3 - Applications

The Hall-Effect

The Hall-Effect principle is named for physicist

Edwin Hall.

In 1879 he discovered that when a conductor or

semiconductor with current flowing in one direction was introduced perpendicular to a magnetic field a voltage

could be measured at right angles to the current path.

No Magnetic

Field

South

Magnetic Field

North Magnetic

Field

The Hall voltage can be calculated fromV

Hall =

σB

where:

VHall = emf in volts

sensitivity in Volts/Gauss

applied field in Gauss

bias current

The initial use of this discovery was for the classification

Output

of chemical samples. The development of indium arsenide

Differential

Schmidt

Amplifier

Trigger

semiconductor compounds in the 1950's led to the first

useful Hall effect magnetic instruments. Hall effect sen-

sors allowed the measurement of DC or static magnetic

fields with requiring motion of the sensor. In the 1960's

Hall

Plate

GND

the popularization of silicon semiconductors led to the

GND

first combinations of Hall elements and integrated ampli-

Digital Hall Effect Switch

fiers. This resulted in the now classic digital output Hall

switch. (right)

The continuing evolution of Hall transducers technology saw a progression from single element devices to dual

orthogonally arranged elements. This was done to minimize offsets at the Hall voltage terminals. The next pro-

gression brought on the quadratic of 4 element transducers. These used 4 elements orthogonally arranged in a

bridge configuration. All of these silicon sensors were built from bipolar junction semiconductor processes. A

switch to CMOS processes allowed the implementation of chopper stabilization to the amplifier portion of the

circuit. This helped reduce errors by reducing the input offset errors at the op amp. All errors in the circuit non

chopper stabilized circuit result in errors of switch point for the digital or offset and gain errors in the linear out-

put sensors. The current generation of CMOS Hall sensors also include, a scheme that actively switched the

direction of current through the Hall elements. This scheme eliminates the offset errors typical of semiconduc-

tor Hall elements. It also actively compensates for temperature and strain induced offset errors. The overall

effect of active plate switching and chopper stabilization yields Hall-Effect sensors with an order of magnitude

improvement in drift of switch points or gain and offset errors.

Melexis uses the CMOS process exclusively, for best performance and smallest chip size. The developments to

Hall-Effect sensor technology can be credited mostly to the integration of sophisticated signal conditioning cir-

cuits to the Hall IC. Recently Melexis introduced the world’s first programmable linear Hall IC, which offered

a glimpse of future technology. Future sensors will programmable and have integrated microcontroller cores to

make an even “smarter” sensor.

Recommended Resources

Staircase wave signal generation circuit composed of 7555 and 4017

Voltage dividing power circuit

Positive 10V precision voltage reference circuit diagram

acupoint detector

Infrared remote control detection circuit

1.5-5.7MHZ optically isolated VYO battery

Russian media: Slavery is revived in the United States, with 2.2 million prisoners working for free: [align=left][color=#222222][backcolor=rgb(238, 238, 238)][font=sans-serif][color=#2b2b2b][font=simsun, arial, helvetica, clean, sans-serif]China.com, December 14 According to a report on the Russian K...; xuyiyi Talking

Reading and writing txt files in wince4.2: char *szTemp=NULL; HANDLE hFile= CreateFile(L"\\NAND\\debug.txt", GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, 0, NULL); sprintf(szTemp,"%f",(ppt->y )); //ppt-> is the Y coordinate of the sampling point LONG ...; shxhzxll Embedded System

Isolated Buck Converter PCB Layout Tips: Synchronous buck converters have gained acceptance as isolated bias supplies in the communications and industrial markets. The isolated buck converter, or Fly-Buck converter as it is commonly called, ...; qwqwqw2088 Analogue and Mixed Signal

Ask for advice on two MCU control NRF24L01 problem: I've been working on 2401 recently. There's no problem with communication between 51 and 51, but I can't get the result between 430 and 51. I used 22.1184M crystal for 51 and 8M crystal for 430. It sh...; RCSN Microcontroller MCU

Summary of msp430 built-in functions: (1) The maximum operating frequency supported by MSP430F5529 is 25MHZ, which means that there is a limit to the speed of the system through the phase-locked loop multiplication. The maximum speed can ...; fish001 Microcontroller MCU

Switches the click sound of the touch screen to be quicker.: const TCHAR szregRootScreenKey[]=TEXT("ControlPanel\\Volume"); const TCHAR szregScreen[]=TEXT("Screen"); m_Screen = !m_Screen; HKEY hKey1; DWORD dwType1; DWORD dwScreen1 = 65538; DWORD dwScreen2 = 655...; gjenny Embedded System

Shortcut: L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

Popular Components