HAL401
DATA SHEET
Linear Hall Effect Sensor IC
in CMOS technology
1.2. Marking Code
Type
Temperature Range
Release Notes: Revision bars indicate significant
changes to the previous edition.
A
K
HAL401
401A
401K
1. Introduction
The HAL401 is a Linear Hall Effect Sensors produced in
CMOS technology. The sensor includes a temperature-
compensated Hall plate with choppered offset com-
pensation, two linear output stages, and protection de-
vices (see Fig. 2–1).
1.3. Operating Junction Temperature Range
The Hall sensors from Micronas are specified to the chip
temperature (junction temperature T ).
J
The output voltage is proportional to the magnetic flux
density through the hall plate. The choppered offset
compensation leads to stable magnetic characteristics
over supply voltage and temperature.
A: T = –40 °C to +170 °C
J
K: T = –40 °C to +140 °C
J
The HAL401 can be used for magnetic field measure-
ments, current measurements, and detection of any me-
chanical movement. Very accurate angle measure-
ments or distance measurements can also be done. The
sensor is very robust and can be used in electrical and
mechanical hostile environments.
Note: Due to power dissipation, there is a difference be-
tween the ambient temperature (T ) and junction
A
temperature. Please refer to section 4.1. on page
18 for details.
1.4. Hall Sensor Package Codes
The sensor is designed for industrial and automotive ap-
plications and operates in the ambient temperature
range from –40 °C up to 150 °C and is available in the
SMD-package SOT89B-1.
HALXXXPA-T
Temperature Range: A or K
Package: SF for SOT89B-1
Type: 401
1.1. Features:
– switching offset compensation at 147 kHz
– low magnetic offset
Example: HAL401SF-K
→ Type: 401
→ Package: SOT89B-1
– extremely sensitive
→ Temperature Range: T = –40 °C to +140 °C
J
– operates from 4.8 to 12 V supply voltage
Hall sensors are available in a wide variety of packaging
versions and quantities. For more detailed information,
please refer to the brochure: “Hall Sensors: Ordering
Codes, Packaging, Handling”.
– wide temperature range T = –40 °C to +150 °C
A
– overvoltage protection
– reverse voltage protection of V -pin
DD
– differential output
– accurate absolute measurements of DC and low fre-
quency magnetic fields
– on-chip temperature compensation
4
Micronas
MICRONAS [ MICRONAS ]
