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HAL815, HAL815A, HAL815UT-A

Table of contents:
Info of HAL815
Info of HAL815A
Info of HAL815UT-A

HAL815, HAL815A, HAL815UT-A Selling Leads, Datasheet

MFG:Micronas 05+ Y Package Cooled:DIP D/C:04+

HAL815, HAL815A, HAL815UT-A Datasheet download

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Part Number: HAL815

MFG: Micronas 05+ Y

Package Cooled: DIP

D/C: 04+

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HAL815 General Description

The HAL 815 is a monolithic integrated circuit which provides an output voltage proportional to the magnetic flux through the Hall plate and proportional to the supply voltage (ratiometric behavior).

The external magnetic field component perpendicular to the branded side of the package generates a Hall voltage. The Hall IC is sensitive to magnetic north and south polarity. This voltage is converted to a digital value, processed in the Digital Signal Processing Unit (DSP) according to the settings of the EEPROM registers,converted to an analog voltage with ratiometric behavior, and stabilized by a push-pull output transistor stage. The function and the parameters for the DSP are explained in Section 2.2. on page 7.

The setting of the LOCK register disables the programming of the EEPROM memory for all time. This register 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 modulating the supply voltage (see Fig. 21). In the supply voltage range from 4.5 V up to 5.5 V, the sensor generates an analog output voltage. After detecting a command,the sensor reads or writes the memory and answers with a digital signal on the output pin. The analog output is switched off during the communication.

Several sensors in parallel to the same supply and ground line can be programmed individually. The selection of each sensor is done via its output pin.The open-circuit detection provides a defined output voltage if the VDD or GND line is broken. Internal temperature compensation circuitry and the choppered offset compensation enables operation over the full temperature range with minimal changes in accuracy and high offset stability. 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 sensor IC is equipped with devices for overvoltage and reverse-voltage protection at all pins.

HAL815 Maximum Ratings

Symbol	Parameter	Pin No.	Min.	Max.	Unit
V_DD	Supply Voltage	1	-8.5	8.5	V
V_DD	Supply Voltage	1	-14.4¹⁾²⁾	−14.4¹⁾²⁾	V
-I_DD	Reverse Supply Current	1	-	50¹⁾	mA
I_Z	Current through Protection Device	1 or 3	-300⁴⁾	300⁴⁾	mA
V_OUT	Output Voltage	3	-5⁶⁾-5⁶⁾	8.5³⁾14.4³⁾²⁾	V
V_OUT-V_DD	Excess of Output Voltage over Supply Voltage	3,1		2	mA
I_OUT	Continuous Output Current	3	-10	10	mA
t_Sh	Output Short Circuit Duration	3	-	10	min
T_S	Storage Temperature Range		-65	150	°C
T_J	Junction Temperature Range		-40 -40	1705) 150	°C

1) as long as TJmax is not exceeded
2) t < 10 min (V_DDmin = -15 V for t < 1 min, V_DDmax = 16 V for t < 1 min)
3) as long as TJmax is not exceeded, output is not protected to external 14 V-line (or to -14 V)
4) t < 2 ms
5) t < 1000h
6) internal protection resistor = 100

HAL815 Features

high-precision linear Hall effect sensor with ratiometric output and digital signal processing
multiple programmable magnetic characteristics in a non-volatile memory (EEPROM) with redundancy and lock function
open-circuit (ground and supply line break detection),overvoltage and undervoltage detection
for programming an individual sensor within several sensors in parallel to the same supply voltage, a selection can be done via the output pin
to enable programming of an individual sensor amongst several sensors running parallel to the same supply voltage, each sensor can be selected via its output pin
temperature characteristics are programmable for matching all common magnetic materials
programmable clamping function
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
total error < 2.0% over operating voltage range and temperature range
operates with static magnetic fields and dynamic magnetic fields up to 2 kHz
overvoltage and reverse-voltage protection at all pins
magnetic characteristics extremely robust against mechanical stress
short-circuit protected push-pull output
EMC and ESD optimized design

HAL815 Typical Application

Due to the sensor's versatile programming characteristics,the HAL 815 is the optimal system solution for applications such as:
contactless potentiometers,
angle sensors,
distance measurements,
magnetic field and current measurement.

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