描述 Description

The Allegro A1366 factory-programmable linear Hall effectcurrent sensor IC has been designed to achieve highaccuracy and resolution. The goal is achieved through newproprietary linearly interpolated temperature compensationtechnology that is programmed at the Allegro factory, whichprovides sensitivity and offset that are virtually flat acrossthe full operating temperature range. The flat performanceover temperature makes this IC ideally suited for currentsensing applications. Temperature compensation is done inthe digital domain with integrated EEPROM technologywithout sacrificing the analog signal path bandwidth, makingthis device ideal for HEV inverter, DC-to-DC converter, andelectric power steering (EPS) applications.

This ratiometric Hall-effect sensor IC provides a voltage outputthat is proportional to the applied magnetic field. Sensitivity andquiescent (zero field) output voltage are factory programmedwith high resolution which provides for an accuracy of lessthan ±1%, typical, over temperature.

The sensor IC incorporates a highly sensitive Hall element witha BiCMOS interface integrated circuit that employs a low noise,small-signal high-gain amplifier, as well as a low-impedanceoutput stage, and a proprietary, high bandwidth dynamic offsetcancellation technique. These advances in Hall-effect technologywork together to provide an industry leading sensing resolution atthe full 120?kHz bandwidth. The device has built in broken groundwire detection for high reliability in automotive applications.

Device parameters are specified across an extended ambienttemperature range: –40°C to 150°C. The A1366 sensor IC isprovided in an extremely thin case (1?mm thick), 4-pin SIP (singlein-line package, suffix KT) that is lead (Pb) free, with 100% mattetin lead frame plating.

特性 Features

? Factory programmed sensitivity and quiescent output voltage with high resolution
? Proprietary segmented linear interpolated temperature compensation (TC) technology provides a typical accuracy of 1% across the full operating temperature range
? Extremely low noise and high resolution achieved via proprietary Hall element and low noise amplifier circuits
? 120 kHz nominal bandwidth achieved via proprietary packaging and chopper stabilization techniques
? Patented circuits suppress IC output spiking during fast current step inputs
? Open circuit detection on ground pin (broken wire)
? Undervoltage lockout for VCC below specification
? Ratiometric sensitivity and quiescent voltage output
? Precise recoverability after temperature cycling
? Wide ambient temperature range: –40°C to 150°C
? Immune to mechanical stress
? Extremely thin package: 1 mm case thickness
? AEC Q-100 automotive qualified

簡介

A1366屬于傳感器變送器的磁性傳感器-線性羅盤（IC）。由制造生產(chǎn)的A1366磁性傳感器 - 線性，羅盤（IC）該系列產(chǎn)品可用于將磁場強(qiáng)度作為一個(gè)可變數(shù)量進(jìn)行測量，而相比之下，類似產(chǎn)品僅檢測是否存在強(qiáng)度超過某個(gè)限值的磁場。常見的應(yīng)用包括測量地球磁場，以類似于傳統(tǒng)羅盤的方式進(jìn)行定向，市面上的一些器件允許以相對(duì)于磁場的物理方向直接讀取測量值。