Description

The A1354 device is a high precision, programmable 2-wire Hall effect linear sensor IC with a pulse width modulated (PWM) output. The duty cycle (D) of the PWM output signal is proportional to the applied magnetic field. The A1354 device converts an analog signal from its internal Hall circuit to a digitally encoded PWM output signal. The coupled noise immunity of the digitally encoded PWM output is far superior to the noise immunity of an analog output signal.

Features and Benefits

? Designed for automotive, battery-powered applications

? Customer programmable quiescent duty cycle, sensitivity, and PWM carrier frequency, through VCC pin

? Simultaneous programming of duty cycle, sensitivity, and PWM carrier frequency, for system optimization

? Factory programmed sensitivity temperature coefficient and quiescent duty cycle drift

? Selectable unidirectional or bidirectional quiescent duty cycles

? Pulse width modulated (PWM) output provides increased noise immunity compared to analog output

? Temperature-stable quiescent duty cycle output and sensitivity

? Output duty cycle clamps provide short circuit diagnostic capabilities

? Optional 50 duty cycle calibration test mode at device power-up

? Wide ambient temperature range: –40°C to 125°C

? Resistant to mechanical stress

? Extremely thin package: 1 mm case thickness

A1354KKTTN-T屬于傳感器，變送器 > 磁性傳感器 - 線性，羅盤(pán)（IC）。Allegro MicroSystems制造生產(chǎn)的A1354KKTTN-T磁性傳感器 - 線性，羅盤(pán)（IC）該系列產(chǎn)品可用于將磁場(chǎng)強(qiáng)度作為一個(gè)可變數(shù)量進(jìn)行測(cè)量，而相比之下，類(lèi)似產(chǎn)品僅檢測(cè)是否存在強(qiáng)度超過(guò)某個(gè)限值的磁場(chǎng)。常見(jiàn)的應(yīng)用包括測(cè)量地球磁場(chǎng)，以類(lèi)似于傳統(tǒng)羅盤(pán)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(chǎng)的物理方向直接讀取測(cè)量值。