HAL1820 SOT89 线性可编程霍尔传感器

HAL1820 SOT89 线性可编程霍尔传感器
封装-*线性可编程霍尔
The HAL 1820 is a new member of the Micronas family of programmable linear Hall sensors.

The HAL 1820 is a universal magnetic field sensor with a linear *og output based on the Hall effect. The IC can be used for angle and linear measurements if combined with a rotating or moving magnet. The major characteristics like magnetic field range, sensitivity, offset (output voltage at zero magnetic field), and the temperature coefficients are programmable in a non-volatile memory.
The HAL 1820 is programmable by modulating the supply voltage of the sensor. No additional programming pin is needed. The easy programmability allows a 2-point calibration by adjusting the output signal directly to the input signal (like mechanical angle, distance, or current). Inpidual adjustment of each sensor during the customer’s manufacturing process is possible. With this calibration procedure, the tolerances of the sensor, the magnet, and the mechanical positioning can be compensated in the final *embly. This offers a low-cost alternative for all applications that presently need mechanical adjustment or laser trimming for calibrating the system.
The sensor is designed to be used in automotive or industrial applications. It operates in a wide junction temperature range from –40 °C up to 170 °C. The HAL 1820 is available in the very *all leaded package TO92UA and in the *all SMD package SOT89B.

Features
Linear Hall-effect sensor with ratiometric *og output
Various programmable magnetic characteristics with non-volatile memory
Di*al signal processing
Continuous measurement ranges from &plu*n;20 mT to &plu*n;160 mT
Temperature characteristics programmable for matching all common magnetic materials
Programming via supply voltage
Lock function and built-in redundancy for EEPROM memory
Operates from –40 °C up to 170 °C junction temperature
Operates from 4.5 V up to 5.5 V supply voltage
Operates with static magnetic fields and dynamic magnetic fields up to 1 kHz
Overvoltage and reverse-voltage protection on VDD pin
Magnetic characteristics extremely robust against mechanical stress.
Short-circuit protected output

Major Applications
Due to the sensor’s versatile programming characteristics and its high accuracy, the HAL 1820 is the optimal system solution for applications such as:
– Contactless potentiometers
– Rotary position measurement
– Linear movement
– Current measurements
– Level measurements