DATA SHEET
HAL1000
1.1. Major Applications
Due to the sensor’s versatile programming character-
istics, the HAL1000 is the optimal system solution for
applications which require very precise contactless
switching:
– end point detection
Programmable Hall Switch
Release Note: Revision bars indicate significant
changes to the previous edition.
1. Introduction
The HAL1000 is a programmable Hall switch. The
major sensor characteristics, the two switching points
B
ON
and B
OFF
, are programmable for the application.
The sensor can be programmed to be unipolar or
latching, sensitive to the magnetic north pole or sensi-
tive to the south pole, with normal or with an electri-
cally inverted output signal. Several examples are
shown in Fig. 2–4 through Fig. 2–7.
The HAL1000 is based on the HAL 8xx family and fea-
tures a temperature-compensated Hall plate with
choppered offset compensation, an A/D converter, dig-
ital signal processing, a push-pull output stage, an
EEPROM memory with redundancy and lock function
for the calibration data, a serial interface for program-
ming the EEPROM, and protection devices at all pins.
Internal digital signal processing is of great benefit
because analog offsets, temperature shifts, and
mechanical stress effects do not degrade the sensor
accuracy.
The HAL1000 is programmable by modulating the
supply voltage. No additional programming pin is
needed. Programming is simplified through the use of
a 2-point calibration. Calibration is accomplished by
adjusting the sensor output directly to the input signal.
Individual adjustment of each sensor during the cus-
tomer’s manufacturing process is possible. With this
calibration procedure, the tolerances of the sensor, the
magnet, and the mechanical positioning can be com-
pensated for the final assembly. This offers a low-cost
alternative for all applications that presently require
mechanical adjustment or other system calibration.
In addition, the temperature compensation of the Hall
IC can be tailored to all common magnetic materials by
programming first and second order temperature coef-
ficients of the Hall sensor sensitivity. This enables
operation over the full temperature range with constant
switching points.
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 and produced in sub-micron
CMOS technology for use in hostile industrial and
automotive applications with nominal supply voltage of
5 V in the ambient temperature range from
−40
°C up
to 150 °C.
The HAL1000 is available in the leaded packages
TO92UT-1 and TO92UT-2.
– level switch (e.g. liquid level)
– electronic fuse (current measurement)
WARNING:
DO NOT USE THESE SENSORS IN LIFE-
SUPPORTING SYSTEMS, AVIATION, AND
AEROSPACE APPLICATIONS.
1.2. Features
– high-precision Hall switch with programmable
switching points and switching behavior
– switching points programmable from
−150
mT up to
150 mT in steps of 0.5% of the magnetic field range
– multiple programmable magnetic characteristics in a
non-volatile memory (EEPROM) with redundancy
and lock function
– temperature characteristics are programmable for
matching all common magnetic materials
– programming through a modulation of the supply
voltage
– operates from
−40
°C up to 150 °C
ambient temperature
– operates from 4.5 V up to 5.5 V supply voltage in
specification and functions up to 8.5 V
– operates with static magnetic fields and dynamic
magnetic fields up to 2 kHz
– magnetic characteristics extremely robust against
mechanical stress effects
– overvoltage and reverse-voltage protection at all
pins
– short-circuit protected push-pull output
– EMC and ESD optimized design
Micronas
March 4, 2004; 6251-528-1DS
3
HAL1000
1.3. Marking Code
The HAL1000 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
HAL1000
1000A
K
1000K
Pin
No.
1.3.1. Special Marking of Prototype Parts
1
Prototype parts are coded with an underscore beneath
the temperature range letter on each IC. They may be
used for lab experiments and design-ins but are not
intended to be used for qualification tests or as produc-
tion parts.
2
3
V
DD
GND
OUT
OUT
IN
Pin Name
Type
1.6. Solderability
All packages according to IEC68-2-58
DATA SHEET
During soldering reflow processing and manual
reworking, a component body temperature of 260 °C
should not be exceeded.
1.7. Pin Connections and Short Descriptions
Short Description
Supply Voltage and
Programming Pin
Ground
Push-Pull Output
and Selection Pin
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
K:
TJ =
−40
°C to +140 °C
The relationship between ambient temperature (T
A
)
and junction temperature is explained in Section 4.3.
on page 22.
1
V
DD
OUT
3
2
GND
Fig. 1–1:
Pin configuration
1.5. Hall Sensor Package Codes
HALxxxxPA-T
Temperature Range: A or K
Package: UT for TO92UT
Type: 1000
Example:
HAL1000UT-K
→
Type:
1000
→
Package:
TO92UT
→
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”.
4
March 4, 2004; 6251-528-1DS
Micronas
DATA SHEET
HAL1000
ates an analog output voltage. After detecting a com-
mand, the sensor reads or writes the memory and
answers with a digital signal on the output pin. The dig-
ital output is switched off during the communication.
Internal temperature compensation circuitry and the
choppered offset compensation enables operation
over the full temperature range with minimal changes
of the switching points. The circuitry also rejects offset
shifts due to mechanical stress from the package. The
non-volatile memory consists of redundant EEPROM
cells. In addition, the HAL1000 is equipped with
devices for overvoltage and reverse-voltage protection
at all pins.
2. Functional Description
2.1. General Function
The HAL1000 is a monolithic integrated circuit which
provides a digital output signal. The sensor is based
on the HAL 8xx design. All blocks before the compara-
tor are identical to the HAL 810 and the signal process-
ing is very similar.
The Hall plate is sensitive to magnetic north and south
polarity. The external magnetic field component per-
pendicular to the branded side of the package gener-
ates a Hall voltage. This voltage is converted to a digi-
tal value and processed in the Digital Signal
Processing Unit (DSP) according to the settings of the
EEPROM registers. The function and the parameters
for the DSP are explained in Section 2.2. on page 6.
The setting of the LOCK register disables the program-
ming of the EEPROM memory for all time. This regis-
ter cannot be reset.
As long as the LOCK register is not set, the output
characteristic can be adjusted by programming the
EEPROM registers. The IC is addressed by modulat-
ing the supply voltage (see Fig. 2–1). In the supply
voltage range from 4.5 V up to 5.5 V, the sensor gener-
HAL
1000
8
V
DD
(V)
7
6
5
V
DD
V
OUT
(V)
V
DD
GND
OUT
protocol
digital
output
Fig. 2–1:
Programming with V
DD
modulation
V
DD
Internally
stabilized
Supply and
Protection
Devices
Temperature
Dependent
Bias
Oscillator
Protection
Devices
Switched
Hall Plate
A/D
Converter
Digital
Signal
Processing
Digital
Output
100
Ω
OUT
EEPROM Memory
Supply
Level
Detection
Lock Control
GND
Fig. 2–2:
HAL1000 block diagram
Micronas
March 4, 2004; 6251-528-1DS
5
京公网安备 11010802033920号
EEWORLD
