描述 Description

HAL 824和HAL 825是現(xiàn)有HAL 8xy系列的擴充，都是高精度磁場感應(yīng)傳感器，提供成比例線性輸出信號。該系列滿足對溫度敏感性飄移和偏置的高要求。因為偏移度很低，該產(chǎn)品系列能夠用于對偏置和感應(yīng)穩(wěn)定性要求很高的應(yīng)用。這對節(jié)氣門位置感應(yīng)、油門踏板感應(yīng)或者電流測量等應(yīng)用都是必須的。產(chǎn)品提供比例模擬輸出信號或者多元模擬輸出。在多元模擬輸出模式下，產(chǎn)品將LSN和MSN值分開輸出。這讓產(chǎn)品輸出信號精度達到14位。主要參數(shù)，比如磁場范圍，輸出格式，敏感性，0磁場輸出電壓（VOQ），及溫度系數(shù)可以通過在非易失性內(nèi)存中對磁電路（線性和二次）編程來進行調(diào)整。兩款產(chǎn)品封裝都是小尺寸含鉛TO92UT。

特性 Features

·Sensitivity drift over temperature less than ±1% (HAL 825 less than ±2%)
·Offset drift over temperature less than ±0.2% (HAL 825 less than ±0.3%) of VDD
·DNL of analog output ±0.9 LSB (±2 LSB for HAL 825)
·Wire Break Detection with 5 kΩ pull-up or pull-down resistor
·Four programmable magnetic ranges: ±30, ±60, ±80, and ±100 mT
·Two programmable 3 dB filter frequencies: 500 Hz and 1 kHz
·Programmable sensitivity and offset (VOQ)
·12-bit ratiometric analog output
·14-bit signal path
·Digital signal processing
·Temperature characteristics program-mable to match all common magnetic materials
·52 customer data bits
·Programming by 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
·Magnetic characteristics extremely robust against mechanical stress