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HAL2850 PDF预览

HAL2850

更新时间: 2024-09-23 07:02:43
品牌 Logo 应用领域
MICRONAS 传感器
页数 文件大小 规格书
2页 237K
描述
Linear Hall-Effect Sensor with PWM Output

HAL2850 数据手册

 浏览型号HAL2850的Datasheet PDF文件第2页 
PRODUCT INFORMATION  
May/2008  
HAL 2850  
®
HAL 2850  
Linear Hall-Effect Sensor with PWM Output  
The HAL 2850 is a new member of the  
Micronas varioHAL (HAL 28xy) family of  
programmable linear Hall-effect sensors.  
Major characteristics, such as magnetic  
field range, sensitivity, offset, output polarity,  
clamping levels, PWM frequency, and the  
temperature coefficients of sensitivity and  
offset, can easily be adjusted to the mag-  
netic circuit by programming the non-vola-  
tile memory.  
Sample accurate transmission  
(each PWM period transmits a new Hall  
sample)  
Programmable PWM frequency in a  
range between 30 Hz and 2 kHz  
It features a digital PWM output with slew-  
rate control, that enables a fast and robust  
data transfer in harsh environments. The  
PWM signal can be directly decoded by any  
unit measuring a duty cycle of a rectangular  
signal (usually a timer/capture unit in a  
microcontroller).  
Non-volatile EEPROM with redundancy  
and lock function  
The HAL 2850 is available in the very small  
leaded package TO-92UT.  
Open-drain output with slew-rate control  
Individual serial number for each sensor  
12-bit customer serial number  
Features  
The highest available PWM frequency is  
2 kHz with 12-bit resolution. The PWM fre-  
quency is customer-programmable in a  
range between 30 Hz and 2 kHz, with a cer-  
tain resolution. The open-drain output with  
programmable slew rates enables an excel-  
lent EMI performance of the total system.  
Major Applications  
High-precision linear Hall-effect sensor  
Spinning-current offset compensation  
Built-in temperature sensor  
Due to the sensor’s versatile programming  
characteristics and low drifts, the HAL 2850  
is the optimal system solution for applica-  
tions such as:  
On-board diagnostics (over temperature,  
over current, etc.)  
Contactless potentiometers  
Customer-programmable temperature  
compensation of output sensitivity  
(2 order) and output offset (1 order)  
The HAL 2850 features a Hall-plate with  
spinning current offset compensation tech-  
nique and a precise temperature sensor  
which is used for temperature compensa-  
tion of both the Hall-sensors sensitivity and  
offset.  
Angular measurements  
(e.g. valve, pedal position)  
nd  
st  
Operating junction temperature range:  
40 °C170 °C.  
Linear movement  
(e.g. seat track position)  
Magnetic characteristics are extremely  
robust against mechanical stress.  
Linear force or torque measurements  
The sensor provides digital signal process-  
ing. This is of great benefit because analog  
offsets, temperature shifts, and mechanical  
stress do not degrade digital signals.  
Current sensing  
(e.g. battery management)  
Digital signal processing  
12-bit resolution  
Leveling  
(e.g. fuel level, suspension control or  
headlight leveling)  
Sampling rate up to 2 kHz with internal  
low-pass filter  

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