Hardware
Documentation
Dat a Sh e e t
HAL 700, HAL 740
Dual Hall-Effect Sensors
with Independent Outputs
®
®
Edition Nov. 30, 2009
DSH000029_002EN
HAL700, HAL740
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 doc-
ument and to make changes to the document’s con-
tent 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,
aviation and 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 applica-
tions 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
Choppered Offset Compensation protected by
Micronas patents no. US5260614, US5406202,
EP0525235 and EP0548391.
Third-Party Trademarks
All other brand and product names or company names
may be trademarks of their respective companies.
2
Nov. 30, 2009; DSH000029_002EN
Micronas
DATA SHEET
HAL700, HAL740
Contents
Page
4
4
4
5
5
5
5
5
6
9
9
10
10
10
10
11
12
16
16
18
20
20
20
20
20
22
Section
1.
1.1.
1.2.
1.3.
1.4.
1.5.
1.6.
1.7.
2.
3.
3.1.
3.2.
3.3.
3.4.
3.4.1.
3.5.
3.6.
4.
4.1.
4.2.
5.
5.1.
5.2.
5.3.
5.4.
6.
Title
Introduction
Features
Family Overview
Marking Code
Operating Junction Temperature Range
Hall Sensor Package Codes
Solderability and Welding
Pin Connections
Functional Description
Specifications
Outline Dimensions
Dimensions of Sensitive Area
Positions of Sensitive Areas
Absolute Maximum Ratings
Storage and Shelf Life
Recommended Operating Conditions
Characteristics
Type Description
HAL700
HAL740
Application Notes
Ambient Temperature
Extended Operating Conditions
Start-up Behavior
EMC and ESD
Data Sheet History
Micronas
Nov. 30, 2009; DSH000029_002EN
3
HAL700, HAL740
Dual Hall-Effect Sensors with Independent Outputs
Release Note: Revision bars indicate significant
changes to the previous edition.
1. Introduction
The HAL700 and the HAL740 are monolithic CMOS
Hall-effect sensors consisting of two independent
switches controlling two independent open-drain out-
puts. The Hall plates of the two switches are spaced
2.35 mm apart.
The devices include temperature compensation and
active offset compensation. These features provide
excellent stability and matching of the switching points
in the presence of mechanical stress over the whole
temperature and supply voltage range.
The sensors are designed for industrial and automo-
tive applications and operate with supply voltages
from 3.8 V to 24 V in the ambient temperature range
from
−40 °C
up to 125
°C.
The HAL700 and the HAL740 are available in the
SMD-package SOT89B-2.
Unipolar Sensors:
1.1. Features
– two independent Hall-switches
– distance of Hall plates: 2.35 mm
– switching offset compensation at typically 150 kHz
– operation from 3.8 V to 24 V supply voltage
– operation with static and dynamic magnetic fields up
to 10 kHz
– overvoltage protection at all pins
– reverse-voltage protection at V
DD
-pin
– robustness of magnetic characteristics against
mechanical stress
– short-circuit protected open-drain outputs
by thermal shut down
– constant switching points over a wide
supply voltage range
– EMC corresponding to ISO 7637
Type
HAL700
HAL740
Switching Behavior
S1: latching
S2: latching
1.2. Family Overview
DATA SHEET
The types differ according to the switching behavior of
the magnetic switching points at the both Hall plates
S1 and S2.
See
Page
16
18
S1: unipolar north sensitive
S2: unipolar south sensitive
Latching Sensors:
The output turns low with the magnetic south pole on
the branded side of the package. The output maintains
its previous state if the magnetic field is removed. For
changing the output state, the opposite magnetic field
polarity must be applied.
In case of a south-sensitive switch, the output turns
low with the magnetic south pole on the branded side
of the package and turns high if the magnetic field is
removed. The switch does not respond to the
magnetic north pole on the branded side.
In case of a north-sensitive switch, the output turns low
with the magnetic north pole on the branded side of
the package and turns high if the magnetic field is
removed. The switch does not respond to the mag-
netic south pole on the branded side.
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Nov. 30, 2009; DSH000029_002EN
Micronas
DATA SHEET
HAL700, HAL740
1.5. Hall Sensor Package Codes
HALXXXPA-T
Temperature Range: K or E
Package: SF for SOT89B-2
1.3. Marking Code
All Hall sensors have a marking on the package sur-
face (branded side). This marking includes the name
of the sensor and the temperature range.
Type
K
HAL700
HAL740
700K
740K
Temperature Range
E
700E
740E
Type: 700
Example:
HAL700SF-K
→
Type: 700
→
Package: SOT89B-2
→
Temperature Range: T
J
=
−40 °C
to +140
°C
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”.
1.4. Operating Junction Temperature Range
The Hall sensors from Micronas are specified to the
chip temperature (junction temperature T
J
).
K:
T
J
=
−40 °C
to +140
°C
E:
T
J
=
−40 °C
to +100
°C
Note:
Due to power dissipation, there is a difference
between the ambient temperature (T
A
) and junc-
tion temperature. Please refer to section 5.1. on
page 20 for details.
1.6. Solderability and Welding
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.
1.7. Pin Connections
1 V
DD
3 S1-Output
2 S2-Output
4 GND
Fig. 1–1:
Pin configuration
Micronas
Nov. 30, 2009; DSH000029_002EN
5
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