Hardware
Documentation
Dat a Sh e e t
HAL 1820
Programmable Linear
Hall Effect Sensor
®
Edition July 3, 2013
DSH000158_003EN
HAL 1820
Copyright, Warranty, and Limitation of Liability
The information and data contained in this document
are believed to be accurate and reliable. The software
and proprietary information contained therein may be
protected by copyright, patent, trademark and/or other
intellectual property rights of Micronas. All rights not
expressly granted remain reserved by Micronas.
Micronas assumes no liability for errors and gives no
warranty representation or guarantee regarding the
suitability of its products for any particular purpose due
to these specifications.
By this publication, Micronas does not assume respon-
sibility for patent infringements or other rights of third
parties which may result from its use. Commercial con-
ditions, product availability and delivery are exclusively
subject to the respective order confirmation.
Any information and data which may be provided in the
document can and do vary in different applications,
and actual performance may vary over time.
All operating parameters must be validated for each
customer application by customers’ technical experts.
Any new issue of this document invalidates previous
issues. Micronas reserves the right to review this docu-
ment and to make changes to the document’s content
at any time without obligation to notify any person or
entity of such revision or changes. For further advice
please contact us directly.
Do not use our products in life-supporting systems,
military, aviation, or aerospace applications! Unless
explicitly agreed to otherwise in writing between the
parties, Micronas’ products are not designed, intended
or authorized for use as components in systems
intended for surgical implants into the body, or other
applications intended to support or sustain life, or for
any other application in which the failure of the product
could create a situation where personal injury or death
could occur.
No part of this publication may be reproduced, photo-
copied, stored on a retrieval system or transmitted
without the express written consent of Micronas.
Micronas Trademarks
– HAL
DATA SHEET
Micronas Patents
Sensor programming with VDD-Modulation protected
by Micronas Patent No. EP 0 953 848.
Third-Party Trademarks
All other brand and product names or company names
may be trademarks of their respective companies.
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Micronas
DATA SHEET
HAL 1820
Contents
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Section
1.
1.1.
1.2.
1.3.
1.4.
1.5.
1.6.
1.7.
2.
2.1.
2.2.
2.2.1.
2.2.2.
2.2.3.
2.2.4.
2.3.
2.3.1.
3.
3.1.
3.2.
3.3.
3.4.
3.4.1.
3.5.
3.6.
3.7.
3.7.1.
4.
4.1.
4.2.
4.3.
4.4.
5.
5.1.
5.2.
5.3.
6.
Title
Introduction
Major Applications
Features
Marking Code
Operating Junction Temperature Range (T
J
)
Hall Sensor Package Codes
Solderability and Welding
Pin Connections and Short Descriptions
Functional Description
General Function
Digital Signal Processing and EEPROM
Customer Register I
Customer Register II
Customer register III and IV
Signal Path
Calibration Procedure
General Procedure
Specifications
Outline Dimensions
Dimensions of Sensitive Area
Package Dimensions
Absolute Maximum Ratings
Storage and Shelf Life
Recommended Operating Conditions
Characteristics
Magnetic Characteristics
Definition of Sensitivity Error ES
Application Notes
Ambient Temperature
EMC and ESD
Application Circuit
Temperature Compensation
Programming of the Sensor
Programming Interface
Programming Environment and Tools
Programming Information
Data Sheet History
Micronas
July 3, 2013; DSH000158_003EN
3
HAL 1820
Programmable Linear Hall-Effect Sensor
Release Note: Revision bars indicate significant
changes to the previous edition.
DATA SHEET
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. Introduction
1.1. Major Applications
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.
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
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Micronas
DATA SHEET
HAL 1820
1.6. Solderability and Welding
1.3. Marking Code
The HAL1820 has a marking on the package surface
(branded side). This marking includes the name of the
sensor and the temperature range.
Type
Temperature Range
A
HAL 1820
1820A
Soldering
During soldering reflow processing and manual
reworking, a component body temperature of 260 °C
should not be exceeded.
Welding
Device terminals should be compatible with laser and
resistance welding. Please note that the success of
the welding process is subject to different welding
parameters which will vary according to the welding
technique used. A very close control of the welding
parameters is absolutely necessary in order to reach
satisfying results. Micronas, therefore, does not give
any implied or express warranty as to the ability to
weld the component.
1.4. Operating Junction Temperature Range (T
J
)
The Hall sensors from Micronas are specified to the
chip temperature (junction temperature T
J
).
A:
TJ =
40
°C to +170 °C
The relationship between ambient temperature (T
A
)
and junction temperature is explained in Section 4.1.
on page 22.
1.7. Pin Connections and Short Descriptions
1.5. Hall Sensor Package Codes
Pin No.
1
Temperature Range: A
Package: SF for SOT89B-1
UA for TO92UA-1/2
Type: 1820
4
Example:
HAL1820UA-A
Type: 1820
Package: TO92UA-1/2
Temperature Range: T
J
=
40 C
to +170
C
1
V
DD
Pin Name
V
SUP
GND
OUT
GND
Short Description
Supply Voltage and Pro-
gramming Pin
Ground
Push-Pull Output in
Application mode
Ground
HALXXXPA-T
2
3
OUT
Hall sensors are available in a wide variety of packag-
ing versions and quantities. For more detailed informa-
tion, please refer to the brochure: “Hall Sensors:
Ordering Codes, Packaging, Handling”.
3
2,4
GND
Fig. 1–1:
Pin configuration
Micronas
July 3, 2013; DSH000158_003EN
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