描述 Description

HAL283x產(chǎn)品是 Micronas varioHAL? (HAL 28xy)可編程線性霍爾效應(yīng)傳感器系列的成員。
產(chǎn)片帶有數(shù)碼SENT（單邊緣蠶食傳輸）界面。該界面支持在惡劣環(huán)境下汽車應(yīng)用的快速和穩(wěn)定的數(shù)據(jù)傳輸。該界面的應(yīng)用符合SAE J2716 SENT 標(biāo)準(zhǔn)2010-01版。
每條SENT信息含有一系列的脈沖。在一個(gè)協(xié)議里，傳感器傳輸磁場信息，傳感器狀態(tài)信息，以及基于安全考量的CRC校驗(yàn)和。也可選擇在每個(gè)協(xié)議里加一個(gè)停頓脈沖實(shí)現(xiàn)同步傳輸。
內(nèi)部的數(shù)字信號處理是產(chǎn)品的一大優(yōu)勢，因?yàn)槟M偏置、溫度飄移和機(jī)械應(yīng)力并不降低傳感器的精度。
諸如磁場范圍，敏感度，偏置和溫度系數(shù)等主要特性在非易失性內(nèi)存中是可編程的。
HAL ?283x有超小尺寸TO-92UT鉛封裝。

特性 Features

·High-precision linear Hall-effect sensor
·Output resolution up to 16 bit
·On-board diagnostics and power-on self-test covering memory and full signal path
·Typical magnetic ranges from ±20 mT up to ±160 mT in 20 mT steps
·Programmable temperature compensation sensitivity (2nd order) and offset (1st order)
·Programmable sample periods from 0.5 ms to 22 ms with low-pass filter
·SENT output according to SAE J2716
·SENT clock tick time customer-programmable between 2 μs and 17.75 μs
·Low-time customer-programmable between 3 and 6.75 clock ticks
·Sample-accurate transmission
·Non-volatile EEPROM with redundancy and lock function
·Open-drain output with slew rate control (load independent)
·Transmission of temperature and device information by serial data messages
·Operating junction temperature range: ?40 °C up to 170 °C
·ESD protection (±8 kV HBM) at all pins and reverse protection at VSUP pin