PRODUCT INFORMATION

HAL 37xy

May/2014

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Edition May 15, 2014; Order No. PI000149_001EN

Major Applications

The new HAL 37xy family is the optimal

system solution for applications, such as:

(EGR, clutch, transmission position)

(gear selector, motor air management)

System Architecture

The sensors include two vertical and one

horizontal Hall plate with spinning current

offset compensation for the detection of X,

Y, or Z magnetic field components, a signal

processor for calculation and signal condi-

tioning of two magnetic field components,

protection devices, and a ratiometric linear

analog, PWM, or SENT output.

The spinning current offset compensation

minimizes the errors due to supply voltage

and temperature variations or external

package stress.

The signal path of HAL 37xy consists of two

channels (CH1 and CH2). Depending on

the product variant, two out of the three

magnetic field components are connected

to Channel 1 and Channel 2.

The sensors can be used for angle mea-

surements in a range between 0° and 360°

(end-of-shaft and through-shaft setup), as

well as for robust position detection (linear

movement or position). The in-system cali-

bration can be utilized by the system

designer to optimize the performance for a

specific system. The calibration information

is stored in the on-chip EEPROM.

The HAL 37xy is programmable by modu-

lating the output voltage. No additional pro-

gramming pin is needed.

Fig. 1: Block diagram of the HAL 37xy

Internally

Temperature

Oscillator

OUT

VSUP

GND

EEPROM Memory

Lock Control

stabilized

Supply and

Protection

Devices

Dependent

Bias

Protection

Devices

D/A

Temperature

A/D

Sensor

Converter

X/Y/Z

Hall Plate

A/D

A/D

Analog

Output

Converter

Open-circuit,

Overvoltage,

Undervoltage

Detection

Digital

Output

DSP

PWM/SENT

Module

33 Setpoints

Linearization

X/Y/Z

Hall Plate

Available Types and Behavior

Type

Output Format

Detectable Field Component

HAL 3715

Analog Modulo

HAL 3725

Analog

HAL 3726

Analog

HAL 3727

Analog

HAL 3735

PWM and SENT

HAL 3736

PWM and SENT

HAL 3737

PWM and SENT