HAL1820UA-A データシートの表示（PDF） - Micronas

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HAL1820UA-A

Programmable Linear Hall Effect Sensor

Micronas 

HAL 1820

DATA SHEET

Programmable Linear Hall-Effect Sensor

Release Note: Revision bars indicate significant

changes to the previous edition.

1. Introduction

The HAL1820 is a new member of the Micronas family

of programmable linear Hall-Effect Sensors.

The HAL1820 is a universal magnetic field sensor with

a ratiometric, linear analog output. It is produced in

CMOS technology and can be used for magnetic field

measurements, current measurements, and detection

of mechanical movement. Very accurate angle mea-

surements or distance measurements can also be

made. The sensor is very robust and can be used in

electrically and mechanically harsh environments.

Major characteristics like magnetic field range, sensi-

tivity, offset (output voltage at zero magnetic field) and

the temperature coefficients are programmable in a

non-volatile memory. The HAL1820 features a cus-

tomer data register that enables the customer to store

production information (like production serial number)

inside each sensor.

The sensor includes a temperature-compensated Hall

plate with choppered offset compensation, an A/D con-

verter, digital signal processing, an EEPROM memory

with redundancy and lock function for the calibration

data, a serial interface for programming the EEPROM,

a ratiometric linear output and protection devices.

Internal digital signal processing compensates for ana-

log offsets, temperature changes, and mechanical

stress, resulting in highly stable performance.

The HAL1820 is programmable by modulation of the

supply voltage. No additional programming pin is

needed. The easy programmability allows a 2-point

calibration by adjusting the output signal directly to the

input signal (like mechanical angle, distance, or cur-

rent). Individual adjustment of each sensor during the

customer’s manufacturing process is possible. With

this calibration procedure, the tolerances of the sensor,

the magnet and the mechanical positioning can be

compensated in the final assembly.

In addition, the temperature compensation of the Hall

IC can be fit to all common magnetic materials by pro-

gramming first and second order temperature coeffi-

cients of the Hall sensor sensitivity. This enables oper-

ation over the full temperature range with high

accuracy.

The calculation of the individual sensor characteristics

and the programming of the EEPROM memory can

easily be done with a PC and the application kit from

Micronas.

The sensor is designed for industrial and automotive

applications and operates in the junction temperature

range from –40 °C up to 170 °C. The HAL1820 is

available in the very small leaded packages TO92UA-1

and TO92UA-2 and in the SMD-package SOT89B-1.

1.1. Major Applications

Due to the sensor’s robust characteristics, the

HAL1820 is the optimal system solution for applica-

tions such as:

– linear position measurements,

– angle sensors,

– distance measurements,

– magnetic field and current measurement.

1.2. Features

– Ratiometric linear output proportional to the mag-

netic field

– Various programmable magnetic characteristics with

non-volatile memory

– Digital signal processing

– Continuos measurement ranges from  20 mT to

160 mT

– Customer readable Micronas production information

(like lot number, wafer number, etc.)

– Temperature characteristics programmable for

matching all common magnetic materials

– Programming via supply voltage modulation

– Lock function and built-in redundancy for EEPROM

memory

– Temperature and stress-stable quiescent output

voltage

– on-chip temperature compensation

– active offset compensation

– operates from 40 °C up to 170 °C

junction temperature

– operates from 4.5 V up to 5.5 V supply voltage in

specification

– operates with static magnetic fields and dynamic

magnetic fields up to 2.25 kHz

– overvoltage and reverse-voltage protection at VDD

pin

– magnetic characteristics extremely robust against

mechanical stress

– short-circuit protected push-pull output

– EMC and ESD optimized design

4

July 3, 2013; DSH000158_003EN

Micronas

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