HAL1000UT-A Datasheet HAL1000UT-A | P4-P6

HAL1000 DATA SHEET

4 March 4, 2004; 6251-528-1DS Micronas

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.

1.3.1. Special Marking of Prototype Parts

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.

1.4. Operating Junction Temperature Range (T

)

The Hall sensors from Micronas are specified to the

chip temperature (junction temperature T

A: T

= 40 °C to +170 °C

K: T

= 40 °C to +140 °C

The relationship between ambient temperature (T

)

and junction temperature is explained in Section 4.3.

on page 22.

1.5. Hall Sensor Package Codes

Example: HAL1000UT-K

o Type: 1000

o Package: TO92UT

o Temperature Range: T

= 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”.

1.6. Solderability

All packages according to IEC68-2-58

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

Fig. 1–1: Pin configuration

Type Temperature Range

A K

HAL1000 1000A 1000K

HALxxxxPA-T

Temperature Range: A or K

Package: UT for TO92UT

Type: 1000

No.

Pin Name Type Short Description

IN Supply Voltage and

Programming Pin

2 GND Ground

3 OUT OUT Push-Pull Output

and Selection Pin

OUT

GND

DATA SHEET HAL1000

Micronas March 4, 2004; 6251-528-1DS 5

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-

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.

Fig. 2–1: Programming with V

modulation

Fig. 2–2: HAL1000 block diagram

OUT

(V)

HAL

1000

GND

OUT

digital

protocol

output

Internally

Temperature

Oscillator

Switched

100 :

Digital

OUT

GND

Supply

EEPROM Memory

Lock Control

Digital

stabilized

Supply and

Protection

Devices

Dependent

Bias

Protection

Devices

Hall Plate

Signal

Processing

Level

Detection

Output

A/D

Converter

HAL1000 DATA SHEET

6 March 4, 2004; 6251-528-1DS Micronas

Fig. 2–3: Details of EEPROM and Digital Signal Processing

2.2. Digital Signal Processing and EEPROM

The DSP is the main part of the sensor and performs

the signal processing. The parameters for the DSP are

stored in the EEPROM registers. The details are

shown in Fig. 2–3.

Terminology:

SENSITIVITY: name of the register or register value

Sensitivity: name of the parameter

EEPROM Registers:

The EEPROM registers include three groups:

Group 1 contains the registers for the adaption of the

sensor to the magnetic system: MODE for selecting

the magnetic field range and filter frequency, TC and

TCSQ for the temperature characteristics of the mag-

netic sensitivity and thereby for the switching points.

Group 2 contains the registers for defining the switch-

ing points: SENSITIVITY, VOQ, LOW-LEVEL, and

HIGH-LEVEL.

The comparator compares the processed signal volt-

age with the reference values Low-Level and High-

Level.

The output switches on (low) if the signal voltage is

higher than the High-Level, and switches off (high) if

the signal falls below the Low-Level. Several examples

of different switching characteristics are shown in

Fig. 2–4 to Fig. 2–7.

– The parameter V

(Output Quiescent Voltage)

corresponds to the signal voltage at B = 0 mT.

– The parameter Sensitivity defines the magnetic sen-

sitivity:

– The signal voltage can be calculated as:

Therefore, the switching points are programmed by

setting the SENSITIVITY, VOQ, LOW-LEVEL, and

HIGH-LEVEL registers. The available Micronas soft-

ware calculates the best parameter set respecting the

ranges of each register.

Group 3 contains the Micronas registers and LOCK

for the locking of all registers. The Micronas registers

are programmed and locked during production and are

read-only for the customer. These registers are used

for oscillator frequency trimming, A/D converter offset

compensation, and several other special settings.

MODE Register

FILTER

6 bit

TCSQ

5 bit

SENSI-

14 bit

VOQ

11 bit

LOW-

10 bit

11 bit

LOCKR

1 bit

3 bit

RANGE

3 bit

EEPROM Memory

A/D

Converter

Digital

Filter

Multiplier Adder Comparator

Digital Signal Processing

ADC-READOUT Register

14 bit

Digital

TIVITY LEVEL

HIGH-

LEVEL

Output

Micronas

Registers

Lock

Control

Signal

Sensitivity =

Signal

aSensitivity uB + V

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HAL1000UT-A

Mfr. #:

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Manufacturer:

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Description:

Board Mount Hall Effect / Magnetic Sensors Programmable Hall switch - Not recommended for new designs

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