Hardware
Hardware
Documentation
Documentation
DSH000017_003EN
Jan. 27, 2012
Dat i Sh I t
Prel anc ear y Data ion
Advami n e enfo r matSh eet
HAL 320
Differential Hall-Effect Sensor
IC Family
®
Jan.
Edition ??? 27, 2012
DSH000017_003EN
6251-???-?PD
AI000???_00?EN
HAL 320
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
Patents
Choppered Offset Compensation
Micronas patents no. US5406202A.
protected
by
Third-Party Trademarks
All other brand and product names or company names
may be trademarks of their respective companies.
2
Jan. 27, 2012; DSH000017_003EN
Micronas
DATA SHEET
HAL 320
Contents
Page
4
4
4
4
5
5
5
6
7
7
12
12
12
12
13
13
15
20
20
20
20
21
22
Section
1.
1.1.
1.2.
1.3.
1.4.
1.5.
1.6.
2.
3.
3.1.
3.2.
3.3.
3.4.
3.4.1.
3.5.
3.6.
3.7.
4.
4.1.
4.2.
4.3.
4.4.
5.
Title
Introduction
Features:
Marking Code
Operating Junction Temperature Range (TJ)
Hall Sensor Package Codes
Solderability and Welding
Pin Connections
Functional Description
Specifications
Outline Dimensions
Dimensions of Sensitive Area
Package Parameters and Position of Sensitive Areas
Absolute Maximum Ratings
Storage and Shelf Life
Recommended Operating Conditions
Characteristics
Magnetic Characteristics
Application Notes
Ambient Temperature
Extended Operating Conditions
Start-up Behavior
EMC and ESD
Data Sheet History
Micronas
Jan. 27, 2012; DSH000017_003EN
3
HAL 320
Differential Hall-Effect Sensor IC
Release Note: Revision bars indicate significant
changes to the previous edition.
1.1. Features:
DATA SHEET
– Distance between Hall plates: 2.25 mm
– Operates from 4.5 V to 24 V supply voltage
– Switching offset compensation at 62 kHz
1. Introduction
The HAL 320 is a differential Hall switch produced in
CMOS technology. The sensor includes two tempera-
ture-compensated Hall plates (2.25 mm apart) with
active offset compensation, a differential amplifier with
a Schmitt trigger, and an open-drain output transistor
(see Fig. 2–1).
The HAL 320 is a differential sensor which responds to
spatial differences of the magnetic field. The Hall volt-
ages at the two Hall plates, S1 and S2, are amplified
with a differential amplifier. The differential signal is
compared with the actual switching level of the internal
Schmitt trigger. Accordingly, the output transistor is
switched on or off.
The sensor has a bipolar switching behavior and
requires positive and negative values of
B = BS1
BS2 for correct operation.
Basically, there are two ways to generate the differen-
tial signal
B:
Rotating a multi-pole-ring in front of the branded side
of the package (see Fig. 3–1, Fig. 3–2, and Fig. 3–3;
Please use HAL 300 only).
– Back-bias applications: A magnet on the back side
of the package generates a back-bias field at both
Hall plates. The differential signal
B
results from
the magnetic modulation of the back-bias field by a
rotating ferromagnetic target (Please use HAL 320
only).
The active offset compensation leads to constant mag-
netic characteristics over supply voltage and tempera-
ture.
The sensor is designed for industrial and automotive
applications and operates with supply voltages from
4.5 V to 24 V in the ambient temperature range from
–40 °C up to 150 °C.
The HAL 320 is an ideal sensor for target wheel appli-
cations, ignition timing, anti-lock brake systems, and
revolution counting in extreme automotive and indus-
trial environments
The HAL 320 is available in the SMD-package
SOT89B-2 and in the leaded versions TO92UA-3 and
TO92UA-4.
– Overvoltage protection
– Reverse-voltage protection at V
DD
-pin
– Short-circuit protected open-drain output by thermal
shutdown
– Operates with magnetic fields from DC to 10 kHz
– Output turns low with magnetic south pole on
branded side of package and with a higher magnetic
flux density in sensitive area S1 as in S2
– On-chip temperature compensation circuitry mini-
mizes shifts of the magnetic parameters over tem-
perature and supply voltage range
– The decrease of magnetic flux density caused by
rising temperature in the sensor system is compen-
sated by a built-in negative temperature coefficient
of hysteresis
1.2. 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
Temperature Range
A
I
320I
C
320C
HAL 320
320A
1.3. Operating Junction Temperature Range (TJ)
The Hall sensors from Micronas are specified to the
chip temperature (junction temperature T
J
).
The HAL 320 is available in following temperature
ranges:
A: T
J
= –40 °C to +170 °C
I: T
J
= –20 °C to +125 °C
C: T
J
= 0 °C to +85 °C
The relationship between ambient temperature (T
A
)
and junction temperature (T
J
) is explained in section
4.1. on page 20.
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Jan. 27, 2012; DSH000017_003EN
Micronas
DATA SHEET
HAL 320
1.4. Hall Sensor Package Codes
HALXXXPA-T
Temperature Range: A,I,C
Package: SF for SOT89B-2,
UA for TO92UA
Type: 320
Example:
HAL320UA-A
Type: 320
Package: TO92UA
Temperature Range: T
J
=
40 C
to +170
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”.
1.5. 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
electrical 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.
1.6. Pin Connections
1 V
DD
3
OUT
2 GND
Fig. 1–1:
Pin configuration
Micronas
Jan. 27, 2012; DSH000017_003EN
5
Wireless Connectivity
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