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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