描述 Description

HAL 37xy是使用Micronas專利 3D HAL技術(shù)的第二代傳感器產(chǎn)品，提供更加完善的角度測量性能。和第一代相比，角度測量誤差減少30%。
由于技術(shù)的進(jìn)步，產(chǎn)品可以在低至 ±20 mT的磁場工作。HAL 3715和HAL 372x提供線性、比率模擬輸出信號，還有拉起或拉下電阻集成斷線探測。HAL 37xy有脈寬調(diào)制和SENT SAEJ2716 rev. 2010數(shù)碼輸出格式。輸出格式是客戶可編程的。產(chǎn)品能測量BX, BY和BZ方向的磁場分量。這讓它適用于很多潛在的位置探測應(yīng)用，比如遠(yuǎn)距離，者過軸角度測量。芯片信號處理計(jì)算兩個(gè)方向的磁場并且將數(shù)值轉(zhuǎn)換為輸出信號。因?yàn)闇y量方法，傳感器在特定溫度范圍內(nèi)展現(xiàn)出優(yōu)秀的飄移表現(xiàn)，這帶來了一個(gè)角度或線性測量的全新精確水平。產(chǎn)品具有逐步任意可編程線性特性。可以通過在非易失性內(nèi)存中進(jìn)行編程來調(diào)整磁電路的主要特性。產(chǎn)品包括先進(jìn)的診斷功能加強(qiáng)失效安全檢查。產(chǎn)品設(shè)計(jì)適用于汽車和工業(yè)應(yīng)用，溫度范圍從?40 °C 到 170 °C，包裝有小尺寸四引角含鉛二極管TO92UP封裝，也有 SOIC8封裝。

特性 Features

·Measurement extremely robust against temperature and stress influences
·Operating with magnetic field amplitudes down to ±20 mT with an angular accu- racy of ±0.5% FS (digital output, X-Y Hall plates)
·12 bit ratiometric linear analog output for HAL 372x
·Modulo 90°/120° output for HAL 3715
·0.2 kHz to 2 kHz PWM (up to 12 bit) or 12 bit SENT output for HAL 373x
·Programmable arbitrary output characteristic with up to 33 setpoints
·Operates from VSUP = 4.5 V up to 5.5 V
·Operates from TJ = ?40 °C up to 170 °C
·Programming via the sensor’s output pin
·Programmable characteristics in EEPROM with redundancy and lock function
·2nd-order temperature-dependent offset programmable for X/Y- or Z-channel
·On-chip diagnostics
·Short-circuit protected push-pull output
·Over-/reverse-voltage protection at VSUP
·Under- and overvoltage detection of VSUP
·Wire-break detection with pull-up and pull-down resistors