HAL320UA-A数据手册传感器变送器的磁性传感器-开关（固态）规格书PDF

描述 Description

HAL 300和HAL 320是以CMOS技术生产的差动开关。传感器包括两个主动偏置补偿的温度补偿霍尔片，一个带有施密特触发器的差动放大器，和一个开漏输出晶体管。差动传感器感应磁场的空间位置变化。差动放大器会放大S1和S2两块霍尔片的霍尔电压。差动信号和施密特触发器中预设的开关值进行比较。相应地，输出晶体管进行开关动作。在HAL300打标面封装前旋转的多极磁环可以产生差动信号，或者在HAL320的封装背面在两个霍尔片产生反偏压。主动偏置补偿使得磁参数在全电压和全温度下都是持续的。该传感器系为汽车和工业应用设计，工作电压从4.5伏到24伏，温度范围从–40 °C up to 170 °C。有SMD  SOT89B 和铅封版 TO92UA两种封装。

特性 Features

·Distance between Hall plates: 2.05 mm
·Operates from 4.5 V to 24 V supply voltage
·Switching offset compensation at 62 kHz
·Overvoltage protection
·Reverse-voltage protection at VDD-pin
·Short-circuit protected open-drain output by thermal shutdown
·Operates with magnetic fields from DC to 10 kHz
·Output turns low with magnetic south pole on branded side of package and with a higher magnetic flux density in sensitive area S1 as in S2
·On-chip temperature compensation circuitry minimizes shifts of the magnetic parameters over temperature and supply voltage range
·The decrease of magnetic flux density caused by rising temperature in the sensor system is compensated by a built-in negative temperature coefficient of hysteresis
·EMC corresponding to ISO 7637